CatWalk has done a great job with the flap as it is made from the same material as their popular, regular sized cat flap - polycarbonate. This is a very strong material that we'd expect to survive a great deal of use.

The general rule of keeping the top of the flap opening above the pets shoulder is doubly important for the cat flap style doors. This practice eliminates the strain on the "ears" that support the flap in the frame.

As with nearly all cat flaps, a 4-way lock is included with the usual settings: in-only, out-only, unlocked and locked.

The self-framing adjustment range is  ³/₈" - 2" which will fit nearly all interior and exterior doors. Because they're self-framing, installation in a hollow core wood or steel door is not a problem.