Cat Door

The strangest projects tend to be the most fun. Jas salvaged a cat door from another project and asked me to install it in an existing basement window opening. His criteria were a tight fit and easy removal.


My basic frame for the cat door.

I measured the opening within 1/16 inch, then used 1×2 lumber to frame the world’s smallest stud wall. I added an extra stud to the left side to space out the door from an existing window latch. The cat door is shorter than the opening, so I installed it at the bottom of my frame, then closed the gap with a couple more pieces of 1×2. I had to pre-drill all my nail holes to avoid splitting the wood.


In progress. (I wrote the cat’s name above the door for fun.)

A couple finishing touches help the cat door fit snugly in the opening. I used a chisel to carve out a space for that window latch on the left side. Then I ran the right side of the frame through a table saw several times to create a quarter-inch groove that accepts the tongue of the sliding glass window. Installation is easy – just slide the frame into the opening and pull the window tight against it. Sebastian should be pleased.


Cat door installed in the sliding window.

One thought on “Cat Door

  1. The post shows all about your artistic hand in designing a cat door. Yes, you posted a great information. The words are few but it reveals more. Designing a cat door is not as simple as people generally think. Arranging all kinds of comforts for our pets is our top choice. And cat door is one of them that no one can ignore.

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