Endura Flap Thermo Panel 3e with Dual Pane Glass

Durable, Aluminum frame pet door made to withstand extreme climates  ranging in width from 11.25 -17.25 inches (see size chart below)  Removable panel with built-in dog door fits into sliding glass door track Made with dual pane, Low-E glass to improve energy efficiency and reduce infrared & ultraviolet light Easy to install and doesn't require semi-permanent installation How to Measure Your Track Height video guide Need a different size? Check out this product's custom option The Endura Flap Thermo Panel 3e with Dual Pane Glass is a highly insulated dog door for sliding glass doors that fits into your existing door track. This removable panel has an easy installation, as the spring-loaded design safely secures the panel in place without making any permanent alterations. It's great for renters and vacation homes.  Engineered with Low-E, dual pane glass, 3/16" thick and a polyolefin polymer flap that magnetically seals, the Thermo Panel 3e provides supreme insulation and energy