At Best-In-Glass Dog Doors, we recommend using Max-Seal Pet Doors by Security Boss. Over the past 10+ years, we’ve found that these particular dog doors are of the highest-quality, and work phenomenally in Colorado’s extreme weather. Max-Seal Pet Doors are available in a variety of finishes and sizes, and our team can help you make the best choices for your home. Max-Seal Dog Doors are also known to have the best insulation and security features available.
Small – 6″w x 7.5″h – Cats & dogs up to 14 lbs.
Small/Medium – 7″w x 9″h – Large cats & small dogs up to 15 lbs. (Papillion, Havenese, Bichon, Yorkies, etc.)
Medium – 9″w x 12″h – Cavalier King Charles, femal Pugs, Jack Russell Terriers
Large – 11″w x 16″h – Cocker Spanials, Shetlands, Shar Pei, Wheaten Terriers, Whippets
Tall – 11″w x 20″h – English Springer, Standard Poodles, female Labs, Samoyed, Dalmations
XL Grand – 12″w x 24″h – Male Golden Retrievers, Collies, German Shepards, Large Irish Setters
Wide Tall – 15″w x 20″h – Large Labs, Large Rottweiler, Ridgebacks
Mammoth – 15″w x 24″h – Dobermans, large German Shepards, Landseer, Mastiffs
Behemoth – 15.75″w x 32″h – Irish Wolf Hounds, St. Bernards, Great Danes & other giant breeds/large dogs needing additional room due to mobility and arthritic problems