Pet Safe Classic flaps are the new name for the old Pet-Eze (later US Pet Products) brand of pet doors. Here's some historical information that may help to identify a Pet Eze flap.

PetSafe Classic flaps are one-piece construction of clear, tinted, flexible vinyl. They have been clear, not tinted, in the past.

Magnets are embedded in the flap material across the bottom only.

The XLarge size was originally produced in a very durable, solid black 'rubber'. That is no longer available and they are now the same material as the other sizes.

These flaps fit all current production PetSafe 'Classic' pet doors, PetSafe Deluxe Patio Panels, PetSafe Instant Panel, PetSafe Wall Entry doors  and all older Pet-Eze, US Pet Products, Greater Freedom and InstaFit Deluxe pet doors and Deluxe patio panels.

These flaps were also used in the Original Thermo Panel, Thermo Panel II, Original Quick Panel and Quick Panel II for sizes medium, large and XLarge.  (A very few of these products were also made with Ideal and Johnson flaps and care should be taken to order the correct one. Call if you have a question about this.)

Newer doors have a 'floating' magnet bar. Older Pet-Eze doors had a magnet bar which was a 'press fit' in the frame and only adjustable up and down a small amount using pliers.

If you are confident of the brand, do not be concerned about minor discrepancies in the dimensions.