The Cat Mate 234 or 235 Manual Cat Door for Walls
The Cat Mate 234 and 235 cat flaps are identical except that the 234 includes a 2-way lock and the 235 includes a 4-way lock. Both are plastic framed basic cat flaps with tunnel sections easily snap together to 'frame-out' a wall of any thickness. The flap is a rigid acrylic with weather strip around the perimeter and seals reasonably well. This is one of the easiest wall cat doors to install.
Cat-Mate 303 Wall Liner Kit instructions:
1. Double check that you have the correct number of liners to frame out your wall before proceeding.
2. Next you will have to make a rectangular cut out in the wall. Take a level and pencil to mark the lines on the wall. The bottom of the cut should be level with your pet’s stomach or slightly lower. Check again that the line is straight and level before moving on.
Tip: It is very important that you not cut into any wall framing, electrical, pipes, etc. so double check when picking a location for the pet door.
Tip: The manufacturer recommends that you use wood to frame out the opening, and take note that the finished framed out opening should be 6-½” wide by 6-⅞” high.
3. Cut the interior hole out first and remove insulation.
4. Now drill holes from the inside through the exterior wall and use those as pilot holes for the outside cut.
Tip: Tape up the inside hole with plastic sheeting before cutting the outside wall. This will make clean up much easier.
5. Cut out the exterior wall.
6. Assemble wall liners and fit them onto the flap frame.
Tip: The manufacturer says that a firm push together will be enough to secure them together. You can use some glue to fit the liners together for a more sturdy installation.
7. Take the frame and screw it to the wall putting the liners through the cut out using the the ½” screws.
8. Now drill out the four screw holes using a 3/16” drill bit in diameter.
9. Put the exterior frame on using two of the 3/4” screws. Then place the hole covers and you are finished.