Easily install your Cat Mate flap with Cat Mate’s Wall Liner. Add one or multiple wall liners to your Lockable Cat Flap, or 4-Way Locking Flap for any custom length. Each purchase comes with one wall liner that’s completely paintable, so you can get the perfect color to match your home. Best of all, if you decide you want to change the location of your pet door, the wall liner is easy to remove.
Extender to bridge the gap between both sections of a Cat Mate Cat Flap when installed in a thick wall.
Can be painted to match any existing wall color.
Add more than one wall liner for a customized length.
Easy to install in the wall and attach to the pet door for a stress-free process.
Removes easily if you decide to change the location of the pet door.
Make a suitably sized hole in wall and line it with 19mm 3⁄4 inch plywood or similar material to take screws, as shown in Fig 1. (We recommend the bottom of the hole is approximately level with your pet’s stomach.)
Determine thickness of wall (t).
Determine number of Wall Liners required. (Use an additional liner for each 2 inch of wall thickness.)
Assemble required number of Wall Liners on internal frame (frame without swinging flap). Cut length to wall thickness (t) + 1⁄4inch using a hacksaw, as shown in Fig 4. Use moulded lines as a guide to ensure a square cut.
If desired, glue Wall Liners together using Superglue or ABS solvent adhesive. Place glue into outer joint(s).
Attach interior frame and Wall Liners to inside of wall, using short 1⁄2 inch screws.
Drill out four screw holes in exterior frame to allow close clearance on screws. (Recommended drill 3⁄16 inch diameter.)
Position exterior frame on outside of wall and screw on using 3⁄4 inch screws. Finally, fit screw caps.
Even though it was recommended with the cat door I purchased, it did not fit. I’ll be returning it.
too small for my cats
on Nov 13, 2021
Too small for my cats. just got it and need to return it.
Cat door extension for extra thick walls.
on Jun 19, 2021
These are a must if you are dealing with an extra thick wall. My wall was approximately 8 inches thick and they worked perfectly. They locked together securely and seem to be of good quality and reasonably priced.
Bought them again
on Dec 27, 2020
I used them to convert a deck storage container into a cat house. My strays love it. Then two more strays had been coming around stealing their home so I made another home for them.
Oops Wrong one
on Nov 21, 2020
Wrong liner for our Micro chip door. Found this out after We received the new door. Could not find the correct liner to fit.
Not as marketed on the site
on Aug 26, 2020
I was purchasing The cat-mate-large-catsmall-dog-4-way .... and when I was purchasing that item chewy suggested this item. However, the door I bought has a liner and this liner is too small for that door anyway... so their algorithms need to get better at their job and not suggest things that really don't go together.
For use with CatMate products ref # 234 and 235
on Sep 12, 2020
I bought this thinking it would work with the CatMate Large Cat Flap, ref: 221 W. It did not.
I cannot use
on Dec 29, 2019
I really cannot rate this item or the kitty door I purchased to go with it. It is going to be too small for the larger cats. I do not suggest this size if you have large cats. I care for a lot of kitties and I do not even know what is normal any more but there are some 20 pound cats that are too wide for the door that goes with this extension item and also, I purchased this extension item because I could not tell if one came with the door it goes to but one did arrive with the actual door and I was not going to be able to use this one, even if the actual door would fit the cats.
on Oct 4, 2019
The three segments required to fit thru my thick wall to our garage fit perfectly. I especially appreciated the scribing lines so I could make a square cut with my hacksaw. The tunnel made a very professional installation with the Cat Mate pet door I also ordered.
Great product, but measure carefully
on Oct 23, 2019
Product info for cat door installation in a wall was not correct. For a wall over 4" you will need 3 tunnel pcs, not 2. Otherwise we are very happy with our purchase.