The Patio Pacific Endura Flap IN Wall DOUBLE FLAP Dog Door are designed for installation into an Interior OR Exterior WALL. 

Patio Pacific manufactured the Endura Flap to be the best performing four season, flexible pet door ever created.  The patented design is the best in quality, functionality, robustness, and overall superior to all other products - which the Endura Flap proves by having more awards than any other pet door on the market.

Whether you go with a single or double flap, Patio Pacific designed these durable pet doors to last forever; backed by an industry best 15 year warranty.

Benefits:

• High Performance Endura Flap - The Endura Flap is the most well engineered pet door flap ever made.  It seals and insulates firmly and will last a lifetime, so unlike other cheap pet doors, you won't have to constantly replace your pet door. 
• Comfortable Fit - The Endura Flap sizes were intentionally designed with a high aspect ratio design, making it easy to fit many pets of different sizes.  The sizes make it easy to share between very large and very small dogs and cats, while still being small enough to maximize security. Small #6 for cats and small dogs to the Extra Large #12 for very big dogs.
• Durable and Solid Aluminum Extruded Framing - Unlike other pet doors with flimsy frames and with bolts sticking out everywhere, Patio Pacific designed this in door pet door to feature completely hidden hardware.
• Environmentally-Friendly - The Endura Flap is made using non-toxic, recyclable polyolefin-based polymer (similar to material used in food storage containers).  Unfortunately, most pet doors are made with PVC, or vinyl, which is harmful to the environment. 
• Self-Framing Utilizing Heavy Gauge Aluminum Tunnel - For all walls to 8" thick (ample for most 2x4 & 2x6 stud walls).
• Keep Your Home Secure and Safe - An extra durable locking cover -  with a strength equivalent to 1/16" thick steel plate helps can keep your pets in AND lock pests of all sizes out. The cover easily clips on and is far easier to use than old style spring-loaded pin locks.
• Comprehensive Manufacturer's Warranty - Patio Pacific is confident in the Endura flap, we have a 15 year warranty on the pet door assembly, which is the longest warranty of any product on the market
• 100% Designed, Engineered and Manufactured in the U.S.A. - right in California.

 Watch how to install an Endura Flap Wall Mount pet door.

12 reasons why the Endura Flap Pet Door is the best pet door in the world.

Endura Flap pet doors are so wind-resistant, they don't even flinch with a leaf blower.

How to adjust magnets on your Endura Flap pet door.

Product Specifications:

• Manufacturer - Patio Pacific Inc/Endura Flap
• Your Maximum Pet Size - Cats, Large Cats, Small Dogs, Medium Dogs, Large Dogs, X-Large Dogs
• Climate Suitability - Severe-4 Season
• Sealing Value - Very High
• Wind Resistance - Very High
• Self-Framing - Yes
• Frame Material - Heavy Extruded Aluminum
• Employs Patented “Endura Flap” - Yes
• Insulation Value - Very High, High
• Possible to Add Additional Magnets for Greater Wind Resistance - Yes
• Flap Material - Engage
• Flap Design - Single, Double, Flexible, Insulated Flap
• Flap Colors - Clear
• Flap Thickness - 7/8"
• Award Winning Design - Yes
• Replacement Flaps Available - Yes
• Flap Warranty (if separate) - 15 years
• Ability to Lock Flap - Separate Locking Cover-Loads from Top
• Locking Cover Material - Dimensional ABS
• Can Be Installed In - Walls, Kennel Wall
• Warranty Period - 15 years 

Sizing Chart:

To find the flap size door for your pet:

1. Cut a hole in a piece of cardboard that is the size of the flap you are interested in
2. Place the cardboard with the hole, in the opening of a door, then coax your pet through (use treats if necessary)
3. See what flap size and step over height (height from floor to bottom of where the flap will be installed) works best for your pet.

Note:  Larger Endura Flaps are not recommended for use by kittens or tiny dogs.  Cats have been successful using the Small #06, however a few have found the Medium #08 difficult to use. We would not recommend using the Large #10 or Extra Large #12 or any of the double flap versions for cats.

Sizing Information for Different Breeds:

*Breed Sizes
Breed sizes are examples only. It does not guarantee your pet will fit.  Please  measure your pet carefully, using the measurement guides, to ensure the flap size will fit them properly.

Number of Flaps 
1 - Single Flap - On inside frame (same side as locking cover) 
2 - Double Flap - One on each side. The included dead-air-space from the second flap adds significantly to the already considerable insulation and sealing capability. 

Watch how to install your Endura Flap Door Mount.