Security Boss Giant Breed Dog Door for Sliding Door - Giant 15” x 28” Pet Flap Doggie Door - Custom to Your Specific Door - Heavy Duty Aluminum Frame - Extra Large Dog Door for Extra Large Dog Breeds

Let Security Boss Manufacturing give both you and your dog freedom with this extra large dog door for sliding doors! The frame of this doggie door is made with a solid and sturdy heavy duty aluminum. Aluminum is already rust-resistant, but the white powder coating further defends against moisture. The window is made from tempered safety glass, making it an exceptional exterior door. The top spring-loaded adjusting mechanism secures this doggie door into the existing track of your sliding patio door, and is then secured into place with two thumbscrew locks. When those locks are in place, nobody from the outside will be able to shift the door! This sliding door insert also features a bulb seal weather stripping, providing a superior weather seal. The flap is giant-sized for your giant dog! Our extra large dog door has an opening of 15” by 28”, and can handle even the largest dog breeds. It is constructed of UV treated, fully weatherized vinyl. This means it won’t shrink, crack, discolor, or warp. Our unique design features metal strike plates riveted into the flap, which align with magnets inside the aluminum frame. These magnets combine with a dense pile brushing to create a firm, weather-tight seal. A weather-proof blocking panel made of ABS plastic with twist-locking screws ensures nothing comes in or out without permission. This sliding door doggie door insert comes in a variety of sizes that will fit any sliding door system from 70” to 99” in height. Choose from 4 different rise options for the pet opening, to adjust it to the correct height for your dog. Moved houses? No problem! Security Boss Manufacturing offers extensions that snap onto the top of our sliding door doggie door insert, keeping the height of the pet opening intact while extending the length of the door frame. Security Boss Manufacturing provides a 6 year, limited no-fault warranty on all parts and components. We will repair or replace any component of our extra large dog door for sliding doors.

• GIANT OPENING: This extra large dog door has a 15” by 28” opening with customizable rise.
• UNIVERSAL FIT: Multiple sizes, a spring-loaded adjusting mechanism, and available extensions.
• SECURE + WEATHER-TIGHT: Fits tight into your sliding door tracks, with superior weather stripping.
• EASY INSTALLATION: Pop into your sliding door tracks, tighten two thumbscrews, and you’re done!
• UNIQUE FLAP DESIGN: UV treated flap with magnets and dense brushing creates a usable yet firm seal.
• CUSTOMER FAVORITE: Check our reviews - this door beats out our competitors!