The size of an extra large dog door is going to change just based on the brand as there is no standard in the xl dog door world.
Patio dog door xl.
Medium white aluminum ideal pet patio door.
Medium white tempered glass.
X simplify your life with the 7 in.
Simplify your life with the 7 in.
I have two large dogs that are very different sizes.
Tall aluminum sliding glass door.
Ideal pet door super large white dog patio door fits standard aluminum slider 232 99 patio panel pet door 8 1 4 in.
Endura flap pet door thermo panel 3e sliding door dog door energy efficient doggie door small medium large xl doggy and cat door patio insert in white bronze brushed aluminum frame sliders 75 96 4 2 out of 5 stars 166.
Tall aluminum sliding glass door.
Some brands like the giant hale pet door for doors and walls and the endura flap pet doors have large dog doors that will fit danes and mastiffs.
Super large mill pet and dog patio door insert for 77 6 in.
Extra large white pet dog patio door insert for 75 in.