We developed a sturdy thermoplastic (ABS) frame; a see-through poly vinyl flap with patented edges to not warp; a floating sill to insure good closure; and a strong molded ABS lock-out slide to restrict the pet's movements when necessary. Then we made the Original Pet Door 4 sizes for pets up to 120 pounds.


Features:

Inner telescoping frame that adapts to doors of 1 1/4" to 1 3/4" thickness.

Impact-resistant super-strong thermoplastic. Clear flap allows pet to see if slide is in place.

Tamper Proof Mounting System, pet door can't be removed from outside.

Simple 4-step installation. (Average install time: 20 minutes)

Floating bottom threshold for perfect seal every time.



Door Sizes And Pet Weight:

If Your Cat Is Smaller Than About 15 Lbs Or Your Dog Smaller Than About 8 Lbs, A Flap Size Of Around 5" X 7".

If Your Dog Is Between 8 Lbs And 35 Lbs Consider A Flap Size Around 8" X 11".

If Your Dog Is Between 35 Lbs And 80 Lbs Consider A Flap Size Around 10" X 15".

If Your Dog Is Over 80 Lbs Consider A Flap Size Of 15