Another description of these inserts is "Plastic"

Just a few of the many example include the Endura flap made by Patio Pacific. This is the best thermally sealed doggie door flap made. It is segmented for both strength and flexibility and contains an air gap within the flap itself for superior insulation. The VIP sliding glass patio pet door inserts made by Ideal Pet Products are heavy duty inserts for vinyl sliding glass patio doors featuring dual pane, energy efficient glass and heavy-duty vinyl frames. And of course, for the ultimate in security, extreme weather resistance, reliability and high tech convenience,

Our Custom Pet Door Inserts for Sliding Glass Patio Doors Are A Great Addition To Your Home.

Give your pets more access to your home and the outdoors. With no cutting required, the PetSafe Freedom Patio Panel Sliding Glass Pet Door is easy to install. The patio panel inserts into your sliding glass door frame and automatically adjusts to heights between 76 3/4" and 81" on standard patio doors. The Patio Panel Sliding Glass Pet Door features a heavy-duty aluminum frame, weather stripping, tempered safety glass, and a replaceable magnetic flap. A closing panel allows you to restrict your pet's use and keeps the pet door closed when it is not in use. The Patio Panel Sliding Glass Door also features a reversible lock for right and left opening patio doors.

PetSafe Deluxe Satin Patio Panel Pet Doors | Petco

Our Custom Pet Door Inserts for Sliding Glass Patio Doors Are A Great Addition To Your Home. Give your pets more access to your home and the outdoors. With no cutting required, the PetSafe Freedom Patio Panel Sliding Glass Pet Door is easy to install. The patio panel inserts into your sliding glass door frame and automatically adjusts to heights between 76 3/4" and 81" on standard patio doors. The Patio Panel Sliding Glass Pet Door features a heavy-duty aluminum frame, weather stripping, tempered safety glass, and a replaceable magnetic flap. A closing panel allows you to restrict your pet's use and keeps the pet door closed when it is not in use. The Patio Panel Sliding Glass Door also features a reversible lock for right and left opening patio doors.

Satin, for 76.75"-81" Doors, Small, 5"W X 7"H flap

Give your pets the liberty to relieve themselves outdoors entirely on their own without you having to let them out with a patio panel pet door that has specially developed for use by dogs. The PetSafe Deluxe Bronze Patio Panel pet patio door is simply the best and easiest to use patio dog doors available on the market as it is easy to install and has a conveniently locking feature. It has also been developed to conserve energy by sealing out the cold weather and keepin in the warmth. PetSafe's high-quality panel's exclusive self-adjusting pet patio door can be installed with ease as there is no custom cutting required. Simply insert the pet panel into the frame of your sliding glass door and it automatically adjusts to the proper height using its high-quality spring-loaded mechanism. These patio dog doors are secured through their durable heavy-duty weather resistant aluminum frame and can be locked with either a left or right sliding door with its convenient reversible lock. Features for this bronze-coloreed patio panel doors include a sliding door weather-strip and energy conserving ultra seal replaceable transparent flap, along with innovative spring-loading mechanism that allows for a perfect fit and tempered safety glass. There are also multiple ceramic magnets that ensure the flap always closes completely. Plus, for added security, it even features a locking panel lets you restrict your pet's use both inside and out, and safely contain them temporarily. This convenient PetSafe Deulxe Bronze Patio Panel Pet Door fits sliding glass door frame openings from 76-3/4" to 81" and are available in various flap sizes to accommodate breeds of all sizes.

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