Customer Service: 1.800.826.28717am-4:30pm PST

Pet Doors to install "Through Glass"

General Information About Pet Doors "Through the Glass"

The first thing to realize regarding an "In-The-Glass" pet door is that you cannot cut tempered glass!! If you attempt to cut tempered glass, it will shatter!

The second thing to realize regarding "In-The-Glass" pet doors from Pet Door Guys is how convenient their system makes installing a doggie door directly through the dual-pane glass of your sliding glass door

Read more about "Through the Glass" Pet Doors below >>

Grid List

Set Descending Direction

4 Item(s)

per page

Grid List

Set Descending Direction

4 Item(s)

per page

Special Notices

Suggestions

Restocking Fees

How do you tell if your glass is tempered? Tempered glass usually has an indicia, or 'bug' as it is called in the trade, in one corner. If you see a bug, the glass is tempered.If you don't see a bug, well.... it may be a plate, which you can cut, and it may not. Older houses are more likely to have plate glass; newer houses probably have tempered. Dual-pane, insulated glass units are almost certainly tempered and shouldn't be cut into anyway. Countries outside the USA would appear to have more plate glass.

Plate glass can be easily cut with a glass cutter. Problem is, it isn't very strong. Some pet doors are specially designed to spread the force over a wide area but they're only meant for cats or for small (and non-hyper) dogs.

The best approach is to have a professional glazier from a local glass shop get you a new piece of glass with the circular cut-out required done for you. This can work for dual-pane glass as well as single pane.

Another way to put a pet door "in the glass" is to replace the glass with 'Lexan'--the generic name is polycarbonate--which looks like glass but which can be drilled and sawed like wood. Use a minimum thickness of 3/16" if possible. Also, look for 'scratch resistant' Lexan. In addition to glass, these cat flaps are fine candidates for any thin material including plywood or screen.

FAQ'S

Q:Is the whole sliding glass dog door included when I buy a “through the glass” dog door?

A: No, this is only the glass unit with the dog door installed through it, so you are just replacing the glass in your existing framing.  

Q: Why is it so much money for just the pet door?

A: "Through the glass" units can be pretty expensive because you're getting a custom unit made for entirely to your specifications, that’s why we highly recommend hiring an installer to get all the measurements, as these cannot be returned.  Some of the extra options can add to the cost as well, say if you need the Low E coating or tinting.

Q: How long does it take to get the “Through the Glass” models?

A: It takes about 2-3 weeks for them to actually manufacture, then allow 1-5 business days for transit time from the west coast.  When it ships out we do email you the tracking information so you’ll know when to expect delivery and can alert the installer.

Q: What are the differences between the two manufacturer options?

A: Patio Pet Door Company and Pet Door Guys offer different glass replacement thicknesses and frame colors. The former is a bit more expensive because they offer more options, such as single pane thickness, grids, and custom stepover heights.

Q: Can I cut into my glass and just put any dog door in there?

A: No, there are certain dog doors that are specifically made to be installed in glass.

Q: Why are certain doggy doors suitable for glass installation and others are not?

A: First, the self framing range may not accommodate the thickness of the glass. There are also other variable measures of different types of doggy doors that may not be suitable for through the glass installation.  The doors made for this also help spread the force over the wide area, although the flap sizes on these are made really for cats and smaller non-hyper dogs.

Q: Why can't I just cut into any glass door or window?

A: If you attempt to cut into "tempered" or dual pane glass, it will shatter. So how do you tell if your glass is tempered? Tempered glass usually has an indicia, or 'bug' as it is called in the trade, in one corner. If you see a bug, the glass is tempered.  If you don't see a bug, well.... it may be plate glass, which you can cut, or it may not. Older houses are more likely to have plate glass; newer houses probably have tempered.

Q: If I'm going to pay so much money for an in the glass door, I want to know exactly what to do and what measurements I need. What do you tell me?

A: First, you’ll want to go over all the information located on the “details” tab and make sure to check out the Placement Guide which will show you where the pet door should be installed based on your set-up.

Then you want to Review Sizing Suggestions, Adding Step-Over, and After Installation to choose the appropriate size opening for your pet.  Make sure that when you get an installer that you give them all this information too, so that they are able to correctly fill out the order form. Next you purchase the product via the website, and we hold the order for you until we receive that order form. Your total for merchandise, shipping and any sales tax will be shown for the glass unit, however the charges from your local glass shop are not included since you would pay them separately.

You then need to contact a local glass shop to have them do the measuring, installation, and filling out of the order form. The installer will come out and take apart your sliding glass dog door frame (a very easy job), takes width, height and thickness measurements then re-installs your glass slider. After that they finish filling out their portion of the order form.

That completed order form  Order Form and email (or fax) us the filled-out Order Form page. Our email is sales@petdoors.comOnce we have the order placed and the form we fax it over to the manufacturer so they can start working on it.   

We ship the completed through glass dog door directly to the installer and they come back out and switch the current unit for the one with the dog door.  Done!

Q: Do you offer electronic options for “Through the Glass” pet doors?

A: Yes, the SureFlap Microchip Pet Door and the Cat Mate Elite 355/356 Super Selective Cat Doors can be installed through the glass.  Although you would have to get a special piece of glass made with a hole already cut out as they do not sell them in the Patio Pet Door Co or Pet Door Guys as an option.

Q: What is the minimum step over on the “Through the glass” units?

A: The minimum step over on the through glass units is 3 3/4" plus however tall the frame of the the sliding door is. There are 2" or 4" add on options as well.

Q: What is the largest flap size on the through glass units?

A: The largest flap size offered for through the glass units is XL 12" x 23".

Q: What are the benefits to the through glass units?

A: The "through the glass" units don't take up as much space as a patio panel, so there is more clearance for you to walk through. Additionally, the "through glass" doggie doors utilize your existing lock, so there is no worry on how to secure your home. For appearances, it also utilizes the same frame, so you don't have to worry about not matching with your current door.

Q: Why does it matter where the doggie door is installed in the glass units?

A: If misplaced, the doggie door can get in the way and impair the full function of your sliding door.

Q: What do you need to put the SureFlap Microchip doors in glass?

A: You need to purchase the "through glass" installation kit that comes with the adapter needed for installation of the doggy door.

Q: Why are certain doggy doors suitable for glass installation and others are not?

A: First, the self framing range may not accommodate the thickness of the glass. There are also other variable measures of different types of doggy doors that may not be suitable for through the glass installation.

Q: What are grids on glass?

A: Grids are crossbars between the glass panes. They sometimes are outside the panes as with your typical French Doors.

Q: What is an "XO" vs "OX" layout?

A: The XO layout is for typical inside sliding wide patio doors, outside sliding doors, three panel doors and wide doors. The OX layout is for four panel doors. A good way to figure this out would be to take a look at this chart.

Q: What layout would I choose for my dog door if my slider was on the outside and why?

A: XO layout because you do not want the sliding vent to hit the doggie door or have the pet flap hit the meeting rail/parked screen when the pet exits.

Q: What is Low “E” coating?

A: It stands for Low-emissivity coating and is applied to the glass to cut back on the heat and cold transfer.. Low outside temperatures combined with moist, warm air inside can result in condensation on the inside of any glass window including that in a patio door. Dual pane, low "E" glass can greatly reduce or eliminate this problem. This feature is especially important in cold climates.

Q: Are the glass units dual pane or single pane?

A: Patio Pet Door Co sells a single pane unit at 3/16" that is only available in a bronze aluminum frame  color.  Any dimension other than that would only be in dual pane.

Q: Can I install one of the glass units myself?

A: Depending on how handy you are it might be possible, although it is not the best idea being that they are custom so you can’t return them if the measurements are off.  We highly recommend that you have a glass company do it for you unless you are a trained professional.

Q: What does it mean by standard and oversize glass size?

A: Standard Glass Size has a square inch range of 34" x 76" or smaller. Oversized Glass Size would be any range over 34" x 76" and up to 46" x 92". Both work with Single or Dual Pane Tempered Glass.

Q: I have a small pet, only 10" to the shoulder and 15Lbs, will the small work?

A: Yes it should work, just be sure that the step over isn't too high for your pet.  For both of the manufacturers the minimum step over would be calculated by measuring the frame of the sliding door from the bottom to the start of the glass then adding 3-¾”.  So if your frame was 2” high then the step over would be 5-¾”.

Q: Does the flap in the glass units insulate well?

A: Yes, both the Patio Pet Door Company and Pet Door Guys glass units use the Endura Flap, which provides excellent insulation.

Q: Can you change the flap in the glass units if it wears out?

A: Yes, you can purchase replacement Endura Flaps on the website, it might sound strange, but you will need to purchase the one for the Door/Wall Mount since that includes the hole plugs.  However, they can be a little difficult to replace because you must remove the whole frame.

Do you have a question that wasn't answered? If you do, please email it to us at sales@petdoors.com