The Petsafe 4-Way Locking Cat Flap, White (previously the Staywell 300 4-way locking cat flap) has a flap dimension of 6 1/4" w x 5 1/2 " h
It is self-framing from 0" to 2 1/4" out of the box and tunnel extensions are available which may be added by the user to increase the maximum to any length.
For example, a self-framing wall mount for any thickness wall could be implemented by simply adding the tunnel extensions.
Petsafe Warranty
Pet Door Products
All parts, excluding vinyl flaps, are covered under warranty, and labor is covered for the first year of ownership. Thereafter, there is a minimum service charge for the repair or replacement of the product. Vinyl flaps are warranted for one (1) year. Misuse, loss, improper handling, commercial use, and dirty or worn parts are not covered. Radio Systems will not pay for loss of time, inconvenience, loss of use of your product, or any incidental or consequential damages.
Note: This warranty also applies to Staywell Products as Petsafe has purchased Staywell.
