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Endura Flap Thermo Panel 3e for Cats

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$429.99
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$429.99
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White
Brushed Aluminum
Bronze (Black)

  • Durable Aluminum frame with dual-pane LoE glass
  • Most insulating kitty door for sliding glass doors
  • Eliminates heating/cooling loss and drafts
  • Comes in white, brushed aluminum, or bronze (black)
  • Adjustable magnet strength promotes easy training
  • No tools required for installation

Product Details


The Thermo Panel Cat Doors for Sliding Glass Doors are the most energy-efficient cat doors on the market, resisting -40 degrees Fahrenheit temperatures and winds up to 50 mph. Most patio panel cat doors fall short of insulating effectively due to thin flap door designs, but these doors include adjustable magnets to promote easier training without compromising the flaps sealing capabilities. No matter the season, these sliding glass panels keep your home insulated year-round and provide freedom and independence for your cats. 

Features:

  • Heavy-duty, extruded aluminum panel available in three sizes (74 3/4" - 77 3/4", 77 1/4" - 80 1/4" or 93 1/4 " - 96 1/4") to accommodate varying sliding glass door sizes.
  • Custom heights available for track heights outside of the three size ranges.
  • Spring-loaded design does not require any tools for installation.
  • Dual-pane, Low-E glass panel optimizes insulation and minimizes UV and infrared light.
  • Environmentally friendly, polyolefin-polymer flap withstands 50 mph winds and -40 degrees Fahrenheit temperatures.
  • 6" x 11"  flap size and adjustable step-over height accommodate cats of all breeds and sizes.
  • Adjustable magnets encompass three sides of the cat flap for a secure, weather-tight seal. To adjust the magnet strength for easier training, refer to the 'Videos' tab for a short tutorial.
  • Sturdy, ABS plastic security cover included for added safety.
  • Foam weatherstripping and center post weather seal draft stopper included for improved insulation and energy efficiency.
  • C-Clamp Lock included to lock the slider.  Charley Bar can be purchased separately if you prefer.

Benefits:

  • Removable pet door insert is perfect for rentals, vacation homes, or people who want to occasionally take out the panel for full use of the sliding glass door.
  • Avoid making permanent alterations to your home.
  • Flexible flap prevents pinching or snagging when cats use the door.
  • Structurally sound design prevents heating/cooling loss and ensures longevity.
  • Cats can freely exert their independence.
  • Designed, engineered, and manufactured in the USA.

Size Chart

Flap SizeFlap DimensionStep Over RangeOverall Panel Width
Small6" w x 11" h3"-5"11 1/4"

 

Track Height Adjustment Range is the measurement of your door height from the lowest point of your track to the highest point. Review our Track Measuring Guide. The Thermo Panel 3e Cat Door Panel comes in three adjustable ranges:

  • Short - 74 3/4" - 77 3/4"
  • Regular - 77 1/4" - 80 1/4"
  • Tall - 93 1/4" - 96 1/4" (additional cost)

 

If your measured track height does not fall within one of the ranges above, we can make a custom height. Choose the range that your track height falls into and when ordered you will be asked to give the exact height of your slider track inside very top to very bottom. In each case you will have 3" of height adjustment with the height you specify approximately in the middle of that range.  The ranges are:

  • under 74 3/4"
  • 80 1/4" - 93 1/4"
  • over 96 1/4"

 

If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution.

 

Additional Information

Your Maximum Pet Size

Cats

Climate Suitability

Severe-4 Season

Sealing Value

Very High, High, Average, Low

Wind Resistance

Very High, High

Installation Instructions

Thermo Panel 3e for Cats Installation






Parts

  • Panel Pet Door
  • Foam Weather Strip
  • Center Post Weather Seal Draft Stopper
  • Sliding Door C-Clamp Lock

Adjusting Step-over Height

The Endura aluminum sliding door panel has a patented Adjustable Step-Over feature which allows you to adjust the height of the flap to the most comfortable fit for your pet. The top of the flap should be positioned to be at least 1” above the top of the pet’s shoulder. If the factory setting is not suitable, please adjust it before proceeding. If the current setting is suitable, proceed to the “Installation Instructions” section.


Step 1: Lay the entire panel on a flat surface. Using a #2 Philips head screwdriver, remove the bottom side-screws and loosen the upper side-screws. Screws were tightly installed to hold the panel together during shipping; a power tool* is recommended.

*If you do not have a Phillips head drill bit skinny enough to fit, let us know and we’ll send you one for free.


Step 2: Once the bottom screws have been removed and the upper side-screws loosened, the Pet Door Assembly and spacers can be removed by sliding the sections down and out of the panel.


Step 3: Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height. You can move the spacer below and above the flap to raise or lower the flap height.

The order of the pieces is important! The piece on the bottom needs to always be at the bottom, as that is where the screws attach.

Make sure that the locking cover side of the flap frame is on the same side as the thumbscrews.

Step 4: When finished, replace the bottom side-screws and tighten the next upper-side screws.

Please Note: A lower step-over height is easier for pets to navigate. However, if the top of the flap is low enough that the pet needs to crouch to get through their pet door, they can injure themselves and possibly cause the pet door to malfunction. If your pet door does not sit at a comfortable height for your pet, you may need a larger flap size.

Two Piece Panel Instructions

If you have a two piece panel, follow the following steps, then move onto the Installation Instructions. If you have a one piece panel, skip this section.

Step 1: Align the aluminum connectors extending from the bottom flap panel section with the top glass panels section. Press the aluminum connectors into the holes at the bottom of the top glass panel section. Ensure that the locking cover and thumbscrews are on the same side.

Step 2: Gently tap the bottom surface of the panel against the ground to completely insert the connectors. Protect hard surfaces to prevent scratching. The components of the panel are designed to slide together very tightly.

Step 3: Fasten the two panels together using the four hex drive flat head screws found in the panel packaging. Use the hex wrench to tighten screws so the two halves of the door are pulled together.

Please Note: Screw holes may look misaligned; this is intentional to ensure a tight fit. The panels will squeeze together as the screws are tightened.

Installation Instructions

Step 1: Loosen the thumbscrews at the top of the pet panel. This allows the spring mechanism to move freely up and down.

Step 2: To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold. Seat the panel on top of the small guide rail in the track. If you can’t quite get it in the track, try swinging in from the outside as the outside track wall may be shorter.

You want to put the pet door in your track before applying any weather stripping to ensure it fits. If the panel fits well, proceed to the next step. See the FAQs if you have trouble.


Step 3: Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground. Apply the foam weather-stripping by peeling back the paper and exposing the adhesive. Unroll it along the edge of the panel, pressing to ensure it adheres. Install on both sides, trim it fit with scissors.


Step 4: The center post weather seal strip (draft stopper) should be installed on the inside of the home. It can install on either the back edge of the sliding door panel or the leading edge of the stationary panel. This strip prevents air from leaking between the sliding glass door and the stationary panel. Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.


Lock Details

Since you cannot lock your sliding door to your panel pet door, we have provided you with alternative locking methods to secure your home:

Installing the sliding door clamp: This clamp has a screw that tightens by hand to prevent the sliding door from moving beyond the clamp’s placement. For doors manufactured with the glass slider on the inside track, the lock can usually be installed on the door’s raised track.

If you aren’t able to use the lock that comes with the panel: A great alternative to locking your sliding glass door is a Charley bar or dowel in the track. Both work off the same concept – they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.


Other Installation Options

Semi-Permanent Installation: You might choose to secure the panel in your track with screws. This can be done by drilling screws at an angle in the top and bottom tracks. We recommend doing this from the outside to minimize damage to the sliding glass door frame. One-way screws will prevent tampering or removal of the panel from the outside.

Stationary Panel:

Some stationary sliding door panels can be unfastened and moved over to one side so that you can install the pet door panel between the jamb and stationary panel. Avoid damaging your sliding glass door by checking that your door can move and that you can reinstall it properly before trying to uninstall the unit.

You will still lose space in your slider to move through, however, you will be able to use your existing sliding door lock to secure your home. Installing your pet door this way is also great in that you already have an alarm system in place.

If your sliding glass door slides on the outside track, using an alternative lock might not be possible, so this allows you to still lock your door.

NOTE: You can do the stationary panel install with the regular spring actuator method – no need to screw it in.

Videos

Removing Magnets for Training with the Endura Flap





How to Measure a Sliding Glass Door for a Pet Door


FAQ

Can an intruder remove the Endura Flap cat door for slider from the outside?

No, the thumbscrews are on the inside of the dog door panel, so once installed, the Endura Flap Panel can't be lifted out.

Does the Endura Flap cat sliding door come with locking covers for security?

Yes, there is a slide-in closing cover that you insert on the interior side of the panel. This closing panel will keep your pets inside and keep unwanted critters out.

Do the Endura Flap panels require tools for installation?

Endura Flap sliding glass doors for cats do not require tools, however the lock for the doors in the heights over 80 1/4" would require a Charley bar for maximum security.

Under which height for a Endura Flap sliding cat door would it need to be custom?

74 3/4" is the smallest the off the shelf pet patio door would compress down to.

At which height over 74 3/4" would a the Thermo Panel Cat door insert need to be custom?

Anything from 80 1/4" - 93 1/4", and over 96 1/4" - 100"

What is the absolute minimum and absolute maximum custom heights for Endura Flap Kitty Panels?

The minimum still using the glass would be 35", and the maximum would be 100".

What if I am outside those minimums and maximums for customs?

Then you can contact us in customer service and we can see what we can do to make you a custom door outside our normal ranges. In some cases extra spacers can be used to extend the panel, or they can be used in place of the glass to get under that 35" minimum.

What happens if I got a panel that was a tiny bit too tall?

The top had two 3/4" flanges that you can trim off using a metal cutting blade.

What do I do if I measured, but the panel was too short?

You can slide one of our height extensions to get you an extra 3/4". If you need more than that you can use a piece of wood cut to size and slide that in the top channel.

What does the Draft Stopper do for my sliding panel door?

This will add to the insulation, as it helps to seal up the gap created by the pet door offsetting the slider so it will no longer line up with the stationary frame. These are included in all the Thermo Panel Cat Doors.

Can the Endura Flap Panel come with an electric door?

This door is manual, but we do have some that are available with electronic options. The Dual Scan will control who comes in and out, the Cat Door will do a good job controlling strays coming in, and the Pet Door has a more generous flap size. All of these doors can sense your cat's microchip to known when to open or close. If you do not want a microchip pet door, you can try the High Tech Pet Power Pet Door, which is large enough to accommodate cats and dogs.

Is this door energy efficient?

It is one of the best and the go-to for extreme weather and high wind prone areas. Other related products like the Petsafe Freedom Aluminum Patio Panel and the Ideal Fast Fit patio panel do not offer energy efficiency close to what the Endura Flap offers.

What is the difference between the Endura Flap Thermo Panel and the Endura Flap Quick Panel?

The only difference is the glass. In the Thermo Panel it is dual pane lo-e and the Quick Panel is single pane.

Can this doggie door fit into my sash window?

The Thermo Panel is made to be a sliding glass pet door only, but if you want a pet door for your window, we have a few recommendations. The Petsafe Vertical Window Pet door is an economical solution for sash windows. Additionally, the Ideal Pet Product's "Cat Sash" Cat Door for Sash Windows, which has a tools-free installation for an easy DIY project.

Warranty

Endura Flap products have a lifetime warranty against defects in materials and workmanship under standard regular use. Damage caused by not using the product as intended, improper installation, and chewing is not covered under this warranty.



Customer Reviews

Customer Reviews
4.5 Based on 37 Reviews
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
S
12/27/2017
Sophia
Easy installation, high quality

Installing it was super easy. The panel itself is really high quality and actually works well in windy conditions. Training my cat to use this took some time due to the magnet strength but my small dog was able to learn pretty easily.

S
12/02/2017
Shirley
Easy to install and weather resistant

The no-tools installation was a huge plus. I can get the panel in and out in a matter of minutes, so if we do need to use the whole opening of the sliding door, it's not an issue at all. It took a bit of training to get my cat to go through since the magnets are strong than she's used to. But overall, great sturdy door that doesn't blow wide open like my previous door did whenever there was some wind.

C
12/29/2015
crb
Not worth it!

The door has condensation that builds up in the area between the glass and door flap. That area also leaks cold air inside. Therefore, it is not any better than a cheaper brand that I had before. I would not recommend.

D
06/15/2015
dave
Excellent Product

Excellent product. Easy to fit and install.

G
02/20/2015
G
This door is the answer to heat/cool loss

This is the answer to the typical problems of heating/cooling loss and drafts. It works just as described in the description.

Endura Flap Thermo Panel 3e for Cats

White / 74.75" - 77.75" Edit

front view endura flap thermo panel 3e for cats

Size Chart

Flap SizeFlap DimensionStep Over RangeOverall Panel Width
Small6" w x 11" h3"-5"11 1/4"

 

Track Height Adjustment Range is the measurement of your door height from the lowest point of your track to the highest point. Review our Track Measuring Guide. The Thermo Panel 3e Cat Door Panel comes in three adjustable ranges:

  • Short - 74 3/4" - 77 3/4"
  • Regular - 77 1/4" - 80 1/4"
  • Tall - 93 1/4" - 96 1/4" (additional cost)

 

If your measured track height does not fall within one of the ranges above, we can make a custom height. Choose the range that your track height falls into and when ordered you will be asked to give the exact height of your slider track inside very top to very bottom. In each case you will have 3" of height adjustment with the height you specify approximately in the middle of that range.  The ranges are:

  • under 74 3/4"
  • 80 1/4" - 93 1/4"
  • over 96 1/4"

 

If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution.

 

Your Maximum Pet Size

Cats

Climate Suitability

Severe-4 Season

Sealing Value

Very High, High, Average, Low

Wind Resistance

Very High, High

Installation Instructions

Thermo Panel 3e for Cats Installation






Parts

  • Panel Pet Door
  • Foam Weather Strip
  • Center Post Weather Seal Draft Stopper
  • Sliding Door C-Clamp Lock

Adjusting Step-over Height

The Endura aluminum sliding door panel has a patented Adjustable Step-Over feature which allows you to adjust the height of the flap to the most comfortable fit for your pet. The top of the flap should be positioned to be at least 1” above the top of the pet’s shoulder. If the factory setting is not suitable, please adjust it before proceeding. If the current setting is suitable, proceed to the “Installation Instructions” section.


Step 1: Lay the entire panel on a flat surface. Using a #2 Philips head screwdriver, remove the bottom side-screws and loosen the upper side-screws. Screws were tightly installed to hold the panel together during shipping; a power tool* is recommended.

*If you do not have a Phillips head drill bit skinny enough to fit, let us know and we’ll send you one for free.


Step 2: Once the bottom screws have been removed and the upper side-screws loosened, the Pet Door Assembly and spacers can be removed by sliding the sections down and out of the panel.


Step 3: Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height. You can move the spacer below and above the flap to raise or lower the flap height.

The order of the pieces is important! The piece on the bottom needs to always be at the bottom, as that is where the screws attach.

Make sure that the locking cover side of the flap frame is on the same side as the thumbscrews.

Step 4: When finished, replace the bottom side-screws and tighten the next upper-side screws.

Please Note: A lower step-over height is easier for pets to navigate. However, if the top of the flap is low enough that the pet needs to crouch to get through their pet door, they can injure themselves and possibly cause the pet door to malfunction. If your pet door does not sit at a comfortable height for your pet, you may need a larger flap size.

Two Piece Panel Instructions

If you have a two piece panel, follow the following steps, then move onto the Installation Instructions. If you have a one piece panel, skip this section.

Step 1: Align the aluminum connectors extending from the bottom flap panel section with the top glass panels section. Press the aluminum connectors into the holes at the bottom of the top glass panel section. Ensure that the locking cover and thumbscrews are on the same side.

Step 2: Gently tap the bottom surface of the panel against the ground to completely insert the connectors. Protect hard surfaces to prevent scratching. The components of the panel are designed to slide together very tightly.

Step 3: Fasten the two panels together using the four hex drive flat head screws found in the panel packaging. Use the hex wrench to tighten screws so the two halves of the door are pulled together.

Please Note: Screw holes may look misaligned; this is intentional to ensure a tight fit. The panels will squeeze together as the screws are tightened.

Installation Instructions

Step 1: Loosen the thumbscrews at the top of the pet panel. This allows the spring mechanism to move freely up and down.

Step 2: To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold. Seat the panel on top of the small guide rail in the track. If you can’t quite get it in the track, try swinging in from the outside as the outside track wall may be shorter.

You want to put the pet door in your track before applying any weather stripping to ensure it fits. If the panel fits well, proceed to the next step. See the FAQs if you have trouble.


Step 3: Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground. Apply the foam weather-stripping by peeling back the paper and exposing the adhesive. Unroll it along the edge of the panel, pressing to ensure it adheres. Install on both sides, trim it fit with scissors.


Step 4: The center post weather seal strip (draft stopper) should be installed on the inside of the home. It can install on either the back edge of the sliding door panel or the leading edge of the stationary panel. This strip prevents air from leaking between the sliding glass door and the stationary panel. Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.


Lock Details

Since you cannot lock your sliding door to your panel pet door, we have provided you with alternative locking methods to secure your home:

Installing the sliding door clamp: This clamp has a screw that tightens by hand to prevent the sliding door from moving beyond the clamp’s placement. For doors manufactured with the glass slider on the inside track, the lock can usually be installed on the door’s raised track.

If you aren’t able to use the lock that comes with the panel: A great alternative to locking your sliding glass door is a Charley bar or dowel in the track. Both work off the same concept – they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.


Other Installation Options

Semi-Permanent Installation: You might choose to secure the panel in your track with screws. This can be done by drilling screws at an angle in the top and bottom tracks. We recommend doing this from the outside to minimize damage to the sliding glass door frame. One-way screws will prevent tampering or removal of the panel from the outside.

Stationary Panel:

Some stationary sliding door panels can be unfastened and moved over to one side so that you can install the pet door panel between the jamb and stationary panel. Avoid damaging your sliding glass door by checking that your door can move and that you can reinstall it properly before trying to uninstall the unit.

You will still lose space in your slider to move through, however, you will be able to use your existing sliding door lock to secure your home. Installing your pet door this way is also great in that you already have an alarm system in place.

If your sliding glass door slides on the outside track, using an alternative lock might not be possible, so this allows you to still lock your door.

NOTE: You can do the stationary panel install with the regular spring actuator method – no need to screw it in.

Videos

Removing Magnets for Training with the Endura Flap





How to Measure a Sliding Glass Door for a Pet Door


FAQ

Can an intruder remove the Endura Flap cat door for slider from the outside?

No, the thumbscrews are on the inside of the dog door panel, so once installed, the Endura Flap Panel can't be lifted out.

Does the Endura Flap cat sliding door come with locking covers for security?

Yes, there is a slide-in closing cover that you insert on the interior side of the panel. This closing panel will keep your pets inside and keep unwanted critters out.

Do the Endura Flap panels require tools for installation?

Endura Flap sliding glass doors for cats do not require tools, however the lock for the doors in the heights over 80 1/4" would require a Charley bar for maximum security.

Under which height for a Endura Flap sliding cat door would it need to be custom?

74 3/4" is the smallest the off the shelf pet patio door would compress down to.

At which height over 74 3/4" would a the Thermo Panel Cat door insert need to be custom?

Anything from 80 1/4" - 93 1/4", and over 96 1/4" - 100"

What is the absolute minimum and absolute maximum custom heights for Endura Flap Kitty Panels?

The minimum still using the glass would be 35", and the maximum would be 100".

What if I am outside those minimums and maximums for customs?

Then you can contact us in customer service and we can see what we can do to make you a custom door outside our normal ranges. In some cases extra spacers can be used to extend the panel, or they can be used in place of the glass to get under that 35" minimum.

What happens if I got a panel that was a tiny bit too tall?

The top had two 3/4" flanges that you can trim off using a metal cutting blade.

What do I do if I measured, but the panel was too short?

You can slide one of our height extensions to get you an extra 3/4". If you need more than that you can use a piece of wood cut to size and slide that in the top channel.

What does the Draft Stopper do for my sliding panel door?

This will add to the insulation, as it helps to seal up the gap created by the pet door offsetting the slider so it will no longer line up with the stationary frame. These are included in all the Thermo Panel Cat Doors.

Can the Endura Flap Panel come with an electric door?

This door is manual, but we do have some that are available with electronic options. The Dual Scan will control who comes in and out, the Cat Door will do a good job controlling strays coming in, and the Pet Door has a more generous flap size. All of these doors can sense your cat's microchip to known when to open or close. If you do not want a microchip pet door, you can try the High Tech Pet Power Pet Door, which is large enough to accommodate cats and dogs.

Is this door energy efficient?

It is one of the best and the go-to for extreme weather and high wind prone areas. Other related products like the Petsafe Freedom Aluminum Patio Panel and the Ideal Fast Fit patio panel do not offer energy efficiency close to what the Endura Flap offers.

What is the difference between the Endura Flap Thermo Panel and the Endura Flap Quick Panel?

The only difference is the glass. In the Thermo Panel it is dual pane lo-e and the Quick Panel is single pane.

Can this doggie door fit into my sash window?

The Thermo Panel is made to be a sliding glass pet door only, but if you want a pet door for your window, we have a few recommendations. The Petsafe Vertical Window Pet door is an economical solution for sash windows. Additionally, the Ideal Pet Product's "Cat Sash" Cat Door for Sash Windows, which has a tools-free installation for an easy DIY project.

Warranty

Endura Flap products have a lifetime warranty against defects in materials and workmanship under standard regular use. Damage caused by not using the product as intended, improper installation, and chewing is not covered under this warranty.

Customer Reviews
4.5 Based on 37 Reviews
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
S
12/27/2017
Sophia
Easy installation, high quality

Installing it was super easy. The panel itself is really high quality and actually works well in windy conditions. Training my cat to use this took some time due to the magnet strength but my small dog was able to learn pretty easily.

S
12/02/2017
Shirley
Easy to install and weather resistant

The no-tools installation was a huge plus. I can get the panel in and out in a matter of minutes, so if we do need to use the whole opening of the sliding door, it's not an issue at all. It took a bit of training to get my cat to go through since the magnets are strong than she's used to. But overall, great sturdy door that doesn't blow wide open like my previous door did whenever there was some wind.

C
12/29/2015
crb
Not worth it!

The door has condensation that builds up in the area between the glass and door flap. That area also leaks cold air inside. Therefore, it is not any better than a cheaper brand that I had before. I would not recommend.

D
06/15/2015
dave
Excellent Product

Excellent product. Easy to fit and install.

G
02/20/2015
G
This door is the answer to heat/cool loss

This is the answer to the typical problems of heating/cooling loss and drafts. It works just as described in the description.