Thermo Panel IIIe Endura Flap patio pet doors by Patio Pacific are made with insulated, low-e dual-pane glass. Dual-pane glass patio dog doors are what you want if you live in very hot or very cold regions because they greatly improve energy efficiency.
In addition, Patio Pacific Thermo Panel IIIe patio dog doors include the award-winning Endura Flap with an unprecedented 15-Year Warranty! If you want a pet door flap specifically designed to outlast the vinyl flaps found on most other doggie doors, then you want an Endura pet door flap by Patio Pacific.
Thermo Panel IIIe patio pet doors also feature a user-adjustable rise, a locking cover, no tools installation and the anti-woops 3/4 inch height adjustment for possible measurement issues.
Patio Pacific Thermo Panel IIIe models are by far our most popular pet doors for sliding glass doors.