【Freedom for Pets】:Give your dogs freedom lifestyle, they can come and go freely through the pet door without your help and enjoy their pleasant life.
【Door Size】:The telescoping tunnel accommodates walls that are 3 9/10-7 7/8 in thick. Flap Opening:14 1/3″*10″,. Frame: 21 2/3″ *14″ , suitable for 0-120lbs dogs.
【Durable and Strong】This Dog Door frame is made of metal frame and telescopic tunnel make it strong , double flaps and sliding lock panels, can be provide weatherproofing, helps protect against extreme weather and reduce external air drafts.