Endura Flap Replacement Flaps Flap Size:Extra Large Gives your cat exclusive access

Gives your cat exclusive access to come and go as they please

Note: You need to purchase the "In the Glass" Pet Door and the additional step-over in the same order

designed specifically for vinyl-framed sliding glass doors that have Channel-style tracks (will not work with monorail tracks)

Note: To Connect using hotspots

Self-framing for doors between 1 1/2" - 2 ' thick

Endura Flap Replacement Flaps Flap Size:Extra Large Gives your cat exclusive accessReplacement flap compatible with all Endura Flap Pet Door models (E2 Design is the same amazing flap, but it comes with different hole covers) Original Design has square joints in the corners and comes with Eight (8) one use hole plugs (4 for original In the Glass pet door models) E2 Design has 45 angled joints in the corners, does not require new screw caps but ships with four (4) reusable screw caps Thermo Panels, Thermo Sashes and New Pet Door Guys