Cat Mate Manual Cat Flaps
The 234 and 235 are plastic framed with a self-liner that serves to 'frame out' a hollow core door in a thickness range of 0" - 2". The liner also makes for a neater appearance in a solid core door.
The only difference between these two Cat Mate cat flaps is that the 234 has a two-way lock and the 235 has a 4-way lock.
The flap is a rigid acrylic with weather strip around the perimeter and seals quite well.
The Cat Mate 234 2-Way Locking Cat Flap and 235 4-Way Locking Cat Flap may be installed in walls using the Cat Mate 303 tunnel sections. Buy as many as needed--at 2" each--for the thickness of the wall. These are found in cat door tunnel sections.
Cat Mate has completed an upgrade program for these cat doors. Specifics will found on our Cat Mate Upgrades page.
Cat Mate Cat Door
To Replace the Flap in a Catmate or Dogmate Pet Door
To remove the flap, you will need a strong but thin object like a screwdriver. You will place this between the flap and the frame, and brace it between the flap and frame to stretch the frame outwards just enough that the flap pops out. To put in a new flap, simply do this process in reverse!
Q: What tunnel section do I need for a Cat Mate 234 or 235 door to put it through a 7" wall and how many?
A: The Cat Mate 234 or 235 Manual Cat Flap and Wall Framing Kit would work for the tunnel sections and you would need 3 to put it through a 7". In this case as the 235 would frame out 2" on its own and the 3 sections would give you an additional 6" and you just trim down the extra.
Below is a table that outlines the liner requirement based on the thickness of the wall you are installing the dog door for wall in.