
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.

Optimal Cat Door with Integrated Grooming Brush - Spacious Access for Adult Cats π± up to 20 Lbs - Effortless Installation, Detailed Instructions, Secure Screws & Screw Caps Included
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

π± The XL Kitty Pass Large Cat Door: Concealed Litter Box Access for Interior Large Pets
9 Review

π PetSafe Wall Entry Pet Doors - Small, Medium, Large - White - Easy Install - Cat & Dog Door for Freedom & Convenience - Made in USA
9 Review

Dry dog ββfood Pro Plan for large breeds with sensitive digestion with lamb 14 kg
10 Review

πΆ Wolspaw 2-Pack Striped Dog Shirt 4th of July - Black Red XL - 100% Cotton T Shirts for X-Large Dogs - Breathable & Stretchy - Pet Boy Girl Clothes
10 Review

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