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Home > Cat & Dog Products > Pet Doors > Pet Doors by Size

Pet Doors by Size

Shop our many brands and types of pet doors that work best for your size of pet.

The "by size" categories below are broken down into mounting styles. Click on any size below to see: pet doors for walls, for doors, for windows, for sliding glass doors and for screens.

Questions? Most people think the hardest part about getting a new pet door is installing it. But that is not the case.

In reality the most difficult thing is selecting the right one. Contact our Customer Service and we will ask you all of the right questions to determine the ideal dog or cat door for your specific needs, including your budget.

Browse Pet Doors by Size
Small Pet Doors
Pet Doors by Size
Small doggy doors and cat doors by PetSafe, Ideal, Patio Pacific and many other fine brands.
Medium Pet Doors
Pet Doors by Size
Medium pet doors in all mounting styles by some of the best-known and trusted brands on the market.
Large Pet Doors
Pet Doors by Size
Large pet doors for walls, doors, windows, screens and sliding glass doors.
Extra Large Pet Doors
Pet Doors by Size
Shop by size and see all brands of extra large pet doors.

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Whether your pet is at home or on the go, you can find that perfect pet product for him at, including a dog carrier, dog crate, pet carrier, pet ramp, dog door, cat bed or dog bed. Browse our large selection of pet gates and dog carriers online, and you're sure to find one that suits you and your pet. All of the products sold at Pet Frenzy are backed by our 100% satisfaction guarantee.