This is particularly true for older dogs as we have found.
Dog house door height.
If your dog is not fully grown you may want to consult our dog house sizes by breedpage to determine its approximate full grown size and what size dog house is best for that breed.
The dog house door width and height are based upon a dog breeds approximate height at the withers.
Taking into consideration that most dogs are comfortable ducking down or dipping to gain entry.
75 100 lbs shoulder to ground.
The shoulder height measurement will determine the door opening size in terms of height.
If the dog s a measurement is 8 1 2 the door height needs to be at least 11 1 2.
Measuring your dog for a doggie door the top of the pet opening is approximately 1 5 2 inches above the pet s shoulders.
Adequate distance between the dog s back and the flap connection also lends to longer flap life.
This way when the dog runs through the door there is enough clearance to avoid hitting their back and causing injury.
The doghouse door opening height should be equal to 75 of your dog s shoulder height.
Length your dog s length x 2 width your dog s length x 3 height your dog s height x 1 75 doorway your dog s height x 1.