I have the same set up but my kennel in my garage is not heated but insulated. I have had 3 pups go through and use this door and have not had one issue. My dog was easy but I dog sat a dog for 6 months and she ripped apart everything including the house but not this door.
GUN DOG DOOR HEAVY DUTY CLICK HERE
I think they claim it is indestructible and they come with a life of the dog warranty including chewing! Mine is still like new 11 years later! Good Luck with the Pup!
Quote:
The Gun Dog House Door® can be used in almost any situation, but the door is primarily designed for non-residential use. Some customers will use this door for garages, out-buildings, dog houses, or anywhere an indestructible dog door is required.
These doors are some of the most rugged, heavy duty, and long lasting dog doors.
Made with heavy duty aluminum welded framing, these doors are Black Lab tested, they are chew proof and indestructible!
These doors are made for use and abuse!
chew-proof, indestructible: Black Labrador tested for more than 20 years.
heavy-duty spring-loaded flap: Makes for most weather-proof kennel type door
frame: 3/16″ heavy duty welded aluminum
door: 1/4″ clear Plexiglas®
hinges: 2 pair extra strong hinges
design allows for any size dog to use: Even puppies can use the friendly door
available in 3 models: Optional closing panels available
warranty: Gun Dog House Door warrants these doors to be free of defects for the life of your dog (Includes Chewing)