Most pet doors fit small and large dogs and cats

Cat doors are designed for cats but can fit some small dogs
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Power Pet electronic doggie and kitty doors come in medium and large sizes to accommodate all pets from very small to extra-large. They are designed for quick, easy installation in doors, walls and sliding glass patio doors. You should purchase a genuine Power Pet door if you are looking for the Best insulated and energy efficient, most Secure, reliable and dependable pet door made. Yes, these are high end pet doors but, you'll quickly see that genuine Power Pet doors are a great value for your hard earned money when you consider quality, features. and that fact that
Extra Large See our lineup of XL door mounted dog doors for Mastiffs, Great Danes, Saint Bernards and other giant breeds. Extra Large Dog Doors for Walls
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Nearly half of all Americans are dog owners, enjoying the emotional and health benefits that come with pet ownership. As with any pet, of course, dogs come with their own sets of needs, including not only , play, and grooming, but also exercise. Many pet owners wishing to simplify their lives opt to install a dog door, thereby decreasing the frequency with which they must get up to let their pet inside or out and giving their dog the freedom to let him/her self out.

come in many sizes, a factor to consider based on the size and height of the pet and the opening they need to come through. In general, dog doors can range from 13 inches by 23 inches on the extra-large end, to 5 inches by 8 inches on the small side. They can also be installed in different places, including wood, steel, French, and glass doors; windows; and brick, siding, and stucco walls. In addition to the standard construction, electronic dog doors are also available. They are also built to withstand different environments and locations; in general, the best bet will be an energy-efficient, construction-grade dog door that leads right out to a fenced area with a gate to keep the pet safe.

With such a range of dog doors on the market, it is important for pet owners to evaluate their personal needs, as well as available product features, sizes, models, and options, to identify the dog door that is best for them. Although dog doors are available from pet stores and manufacturer websites, an aggregate marketplace like provides the widest selection, and often low prices. Custom dog doors are also available and you can have it match your current door finish. Extra Large and Giant Breed dog doors are not as common as the smaller sizes
Photo provided by FlickrQuick View Custom MaxSeal Wall Mount Pet Door.
Photo provided by FlickrPet Door through Wall | Extra Large Dog Door - - PlexiDor
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All PlexiDor extra-large wall mounted dog doors come complete with interior pet door frame, exterior pet door frame, door panels, steel security plate, 2 keys and 4-way lock*, door tunnel (designed for walls up to 12" thick), stainless steel hardware, and are backed by PlexiDor's industry leading 90-day satisfaction guarantee and 5-year no-hassle warranty!