Endura Flap Panel Height and Sash Width Extensions Flap Size:Small Collar key available for pets

Collar key available for pets who have not yet been microchipped

choose the placement based on viewing from the outside-looking-in

measure the outside frame dimensions of your French door and select the corresponding door size

Patio Panel comes in three height ranges to accommodate common sliding glass door sizes

Endura Flap Panel Height and Sash Width Extensions Flap Size:Small Collar key available for petsExtension for Endura Flap Thermo Panels & Thermo Sashes and Dragon Panels & Sashes with aluminum frames (will not work with vinyl framed pet door) Part of the anti whoops design feature on all Thermo panels and sashes Gives you an extra 3 4" added to the panel or sash adjustment range Three colors and four sizes to match your pet door Thermo Panel Height and Thermo Sash Width Extensions These are a part of the exclusive anti whoops feature on all