
For a typical 2x4 stud wall you will need to buy 2 of these. Then during installation. The two I bought could have been 1/4 inch longer. The designer seems to have forgotten that the 2x4 walls are lined with plasterboard or other material. I did it, but it could have been better.

Optimized Baboni Pet Door for Wall - Steel Frame & Telescoping Tunnel - Aluminum Lock - Double Flap Dog and Cat Door - Strong & Durable - Sizes: Small, Medium, Large
9 Review

Interior Pet Door with Built-In Cat Door β Ideal for Small, Medium, & Large Cats β Fits Indoor Hollow Core or Solid Interior Doors β Concealed Kitty Litter Box Furniture β Cat Doors for Interior Doors
9 Review

πΎ Topmart High Density Foam Pet Steps: 2 Tiers, 11.8" High - Non-Slip Dog Stairs and Ramp for Injured Dogs, Older Cats, and Pets with Joint Pain - Ideal for Low Sofas, Stairs, and Lower Places
10 Review

πͺ NAMSAN Pet Door for Screen Door - Doggy Door Protector Slide with Magnetic Flap - Automatic Close & Lockable - Cat Door Screen Gate
9 Review

πΎ Turtleneck Pet Sweater with Leash Hole - Cute Winter Knitwear for Small Dogs and Cats with Snowflake Pattern - Cold Weather Clothes Outfit by BINGPET
11 Review

πΆ Yoda Dog Tee: Unleash the Force in Style with Star Wars for Pets!
9 Review

NACOCO Pet Clothes Owl Sweater: Perfect Christmas Dog Apparel for Cats and Dogs!
9 Review

π© Lanyarco Pet Costume Dog Holiday Hats: The Perfect Accessory for Small Animals and Dogs
10 Review