
Needs 2 of these to span a typical 2" x 4" US interior wall - one was about 3/4" shorter. They're not cheap considering they're a plain are molded plastic. Two of them cost me more than the cat apartment they "extended". I also found availability in the US very limited and for the first I paid more for international shipping from the UK than enough for the liner itself.enough once the desired dimensions are calculated but it would be fairly easy for the manufacturer to give their customers a much more accurate sizing guide.Cut the liner accordingly.Overall the product met my needs but it was 1". Going deeper would have given the manufacturer the opportunity to target the US market directly and saved a lot of frustration for its US customers.-Probability!

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

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

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

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

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

π° Cute Bunny Rabbit Hat with Ears for Cats & Small Dogs: Ideal Party Costume & Halloween Accessory by BWOGUE
9 Review