- Durable Aluminum frame and pet door made to withstand extreme climates
- Adjustable heights and custom sizes to fit any sliding window
- Made with dual-pane, Low-E glass to improve energy efficiency
- Tool-free installation
- All Customs are final sale and cannot be returned, please allow 3 – 4 weeks for custom models to be built and shipped
- An email will be sent to you requesting additional information for your custom order
Product Details
This is the custom window pet door for the Endura Flap Thermo Panel 3e for horizontal sliding windows of unusual heights. The track height adjustment ranges for custom orders are for windows under 74 3/4", between 80 1/4" 93 1/4", and over 96 1/4". Please note that custom-made Endura doors are non-refundable and non-returnable. The panels have a 3" spring-loaded height adjustment, so if you request a 40" panel, for example, the panel you receive will be adjustable from 38" to 41". The Thermo Panel 3e has a spring-loaded design that fits into your sliding window track without the use of any tools. It features dual-pane, Low-E glass to prevent UV rays and infrared light from entering your home. With a flexible, environmentally friendly flap lined on all three sides with magnets, heavy wind will be unable to blow through this window pet door. Save on heating and cooling with the insulating Endura Flap.
Features:
- Pet flaps come in small, medium, large, & extra large for any size pet
- Flap dimensions designed to accommodate pets of multiple sizes
- Aluminum frame designed to fit into the window track with a width of at least 1" thick
- Available in white, brushed aluminum, and dark bronze (black)
- Dual-pane, Low-E glass allows natural light to enter while blocking out unwanted UV rays and infrared light
- Flap withstands -40 degree temperatures and stays sealed in 50mph winds
- Magnetic sealing resists heavy winds/storms
- Flap swings on a rod at the top, avoiding breakage
- Includes a sturdy locking cover
- C-Clamp Lock included for adjustment ranges under 74 3/4" to lock the slider
Benefits:
- Removable panel benefits all owners, especially renters.
- Don't have to make any permanent alterations to window
- Available in white, bronze, or brushed aluminum to match your window
- Pets can enter and exit as they please
Size Chart
| Flap Size | Flap Dimension | Step Over Range | Overall Panel Width |
|---|---|---|---|
| Small #6 | 6" w x 11" h | 3" – 5" | 11 1⁄4" |
| Medium #8 | 8" w x 15" h | 3" – 5" | 13 1⁄4" |
| Large #10 | 10" w x 19" h | 3" – 5" | 15 1⁄4" |
| Extra Large #12 | 12" w x 23" h | 3" – 7" (ships at 5") | 17 1⁄4" |
Track Height Adjustment range is based on the measurement of your window height from the lowest point of your track to the highest point. Wondering how to measure your track? Review our Track Measuring Guide. Each Endura Flap Thermo Panel 3e for Windows has a 3" adjustment range with your window track height approximately in the middle.
Please note: If you order a custom insulated glass unit, it must be specially ordered which takes about 4 weeks. Since these are custom heights it is a final sale, no returns.
If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution.
Minimum and Maximum heights vary by flap size. Here is the info:
| Custom Height: Minimum & Maximum Heights | ||
|---|---|---|
| Model | Minimum | Maximum |
| Small | 35" | 100" |
| Medium | 42" | 107" |
| Large | 48" | 117" |
| Extra Large | 46" | 123" |
Installation Instructions
Thermo Panel 3e Installation
Aluminum Panel Installation Instructions
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
The Endura Flap Pet Door
The Thermo Panel 3e Patio Panel Pet Door
Removing Side Magnets
How to Adjust Your Endura Flap Magnet Strength
Adjusting the Step Over Height
FAQ
|
Which flap size should I get? Here is a measurement guide to help you out. |
|
What do I measure? You would need to measure from the deepest part in the bottom track to the deepest part up inside the top track. Also the panel is 1" in thickness so make sure that your track is at least that wide to be able to accept the panel. |
|
What is the step-over? That is how far from the bottom of the doggy door the flap actually starts. So it is what your pet would have to comfortably clear in order to get out and in. |
|
Is this dog door insert going to provide good insulation? These are excellent for insulation as they have dual pane Low-E glass, and the Endura flap pet door which happens to be one of the best sealing and energy-efficient doors on the market. |
|
Can I install this myself? This is a good door for DIY home installations. Its user-adjustable design allows it to have an easy installation process. In the taller heights, it can be a bit tricky since the panel is larger and heavier, so it is helpful to have an extra set of hands. I would suggest taking a look at the videos tab for a better idea of just what the installation looks like. |
|
Can I lock the doggie door? Yep! We include a well-made closing cover that you slide in place. The tracks are located inside so you don't have to go outside in bad weather to close it off. |
|
How do I lock the sliding door for security? We include a clamp lock for panels under 80.25". You can also use a Charley bar or the old dowel in the track method. All of these different mechanisms work off the same principle that when in place at the window jamb, will prevent the sliding door from being pulled away from the pet door panel. |
|
Can the patio pet door panel be taken out from the outside? No, the panel is held in at the top with a spring loaded adjustment piece. Once the thumb screws, located on the inside, are tightened you can't slide down that piece in order to remove it. |
|
What is the panel made of? The framing is a heavy gauge aluminum. |
|
Can I get this with a flap door that keeps other animals out? We do have the Thermo Panel 2e panels, but the largest flap is on 7" x 7" in Pet Door version. So it is recommend more for cats and pretty small dogs. |
|
How long do these take? Being that they are custom and we have to special order the glass, it can take roughly 4 weeks for delivery. |
|
I live in a mobile home with a shorter than normal sliding glass door. Can I get a custom thermo panel? Yes, you can order a Thermo Panel to accommodate your shorter door. When choosing the Track Height Adjustment Range, select "cust ht under 74 3/4" and then you will be prompted to enter your track height. We will build a panel to your specifications. |
|
I ordered my door but the door frame is too short for my window. What do I do? You can order a height extension panel from Endura Flap Pet Products that will fit into your door track and add extra height to your Thermo Panel. |
|
Where can I purchase a replacement flap for this door? You can purchase a replacement flap for small to extra large door sizes. You can see our full list of replacement parts and accessories for other brands like Ideal Pet Supplies and Petsafe here. |
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
Size Chart
| Flap Size | Flap Dimension | Step Over Range | Overall Panel Width |
|---|---|---|---|
| Small #6 | 6" w x 11" h | 3" – 5" | 11 1⁄4" |
| Medium #8 | 8" w x 15" h | 3" – 5" | 13 1⁄4" |
| Large #10 | 10" w x 19" h | 3" – 5" | 15 1⁄4" |
| Extra Large #12 | 12" w x 23" h | 3" – 7" (ships at 5") | 17 1⁄4" |
Track Height Adjustment range is based on the measurement of your window height from the lowest point of your track to the highest point. Wondering how to measure your track? Review our Track Measuring Guide. Each Endura Flap Thermo Panel 3e for Windows has a 3" adjustment range with your window track height approximately in the middle.
Please note: If you order a custom insulated glass unit, it must be specially ordered which takes about 4 weeks. Since these are custom heights it is a final sale, no returns.
If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution.
Minimum and Maximum heights vary by flap size. Here is the info:
| Custom Height: Minimum & Maximum Heights | ||
|---|---|---|
| Model | Minimum | Maximum |
| Small | 35" | 100" |
| Medium | 42" | 107" |
| Large | 48" | 117" |
| Extra Large | 46" | 123" |
Installation Instructions
Thermo Panel 3e Installation
Aluminum Panel Installation Instructions
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
The Endura Flap Pet Door
The Thermo Panel 3e Patio Panel Pet Door
Removing Side Magnets
How to Adjust Your Endura Flap Magnet Strength
Adjusting the Step Over Height
FAQ
|
Which flap size should I get? Here is a measurement guide to help you out. |
|
What do I measure? You would need to measure from the deepest part in the bottom track to the deepest part up inside the top track. Also the panel is 1" in thickness so make sure that your track is at least that wide to be able to accept the panel. |
|
What is the step-over? That is how far from the bottom of the doggy door the flap actually starts. So it is what your pet would have to comfortably clear in order to get out and in. |
|
Is this dog door insert going to provide good insulation? These are excellent for insulation as they have dual pane Low-E glass, and the Endura flap pet door which happens to be one of the best sealing and energy-efficient doors on the market. |
|
Can I install this myself? This is a good door for DIY home installations. Its user-adjustable design allows it to have an easy installation process. In the taller heights, it can be a bit tricky since the panel is larger and heavier, so it is helpful to have an extra set of hands. I would suggest taking a look at the videos tab for a better idea of just what the installation looks like. |
|
Can I lock the doggie door? Yep! We include a well-made closing cover that you slide in place. The tracks are located inside so you don't have to go outside in bad weather to close it off. |
|
How do I lock the sliding door for security? We include a clamp lock for panels under 80.25". You can also use a Charley bar or the old dowel in the track method. All of these different mechanisms work off the same principle that when in place at the window jamb, will prevent the sliding door from being pulled away from the pet door panel. |
|
Can the patio pet door panel be taken out from the outside? No, the panel is held in at the top with a spring loaded adjustment piece. Once the thumb screws, located on the inside, are tightened you can't slide down that piece in order to remove it. |
|
What is the panel made of? The framing is a heavy gauge aluminum. |
|
Can I get this with a flap door that keeps other animals out? We do have the Thermo Panel 2e panels, but the largest flap is on 7" x 7" in Pet Door version. So it is recommend more for cats and pretty small dogs. |
|
How long do these take? Being that they are custom and we have to special order the glass, it can take roughly 4 weeks for delivery. |
|
I live in a mobile home with a shorter than normal sliding glass door. Can I get a custom thermo panel? Yes, you can order a Thermo Panel to accommodate your shorter door. When choosing the Track Height Adjustment Range, select "cust ht under 74 3/4" and then you will be prompted to enter your track height. We will build a panel to your specifications. |
|
I ordered my door but the door frame is too short for my window. What do I do? You can order a height extension panel from Endura Flap Pet Products that will fit into your door track and add extra height to your Thermo Panel. |
|
Where can I purchase a replacement flap for this door? You can purchase a replacement flap for small to extra large door sizes. You can see our full list of replacement parts and accessories for other brands like Ideal Pet Supplies and Petsafe here. |
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.
This door is a thing of beauty and class. I love it! It fits nicely in my window. Theres no extra noise. There is no outside elements coming in. I would buy this again in a heartbeat. Two thumbs up endura flap!!
This door was so well worth the money spent. It is so insulating and efficient. I have my air conditioning on and it does not escape through the door. The outside air does not come in either. It was built to fit my window perfectly. I am so impressed with this quality of the door. My dogs are so happy!!1
My windows open side to side and no one makes a window for cats that goes side to side except for Endura. It is everything I wanted. It is dual pane, stylish, sturdy, energy efficient ect. The flap is staying shut with the weather and the wind. I could not ask for anything better.
So, you see...apparently my sliding door isnt a "normal" size. I thought all sliding doors were more or less standard and mine fell outside that range. Customer Service worked with me and were very helpful in getting my door sized correctly. I received it a few weeks later and it works perfectly. I just wish that they made panels in standard sizes...
I wanted a cat door for a window that opens side to side. After a lot of thought and conversations with customer service, I have finally decided on this one. It was a bit scary to order because it is custom and non-refundable but the customer service staff was able to answer all my questions and helped me place the order. I just received it and it fits great in my window!
