Security Boss 4-Sided Heavy Duty Exterior Kennel Dog Door - Custom Made for Large Dogs | Weatherproof & Secure Pet Access for Backyard, Garage & Outdoor Kennels

The 4-Sided Exterior Professional is made with a heavy-duty extruded aluminum, and has double reinforced mitered corners for structural strength. All sides of the frame are also lined with heavy density brush weather stripping to prevent any drafts. These Kennel Doors are designed to be installed on the exterior side of the wall, this allows for full use of the interior mounted guillotine doors. When used together, you have controlled access along with unparalleled energy savings. These Kennel Doors are custom made to fit your specifications and we will contact you for the following dimensions (w x h). Flaps The flap is UV protected, reinforced with vertical embedded nylon cords and weatherized to prevent shrinking in sub-zero temperatures. Each flap has 1 1/2" long Alnico, #5 magnets located on the sides and bottom that create a positive seal. Read more Hinged Connesction ​The 4-Sided Exterior Professional by Security Boss Manufacturing LLC uses a heavy duty stainless hinge connection for the flap. This is a great feature for kennels that may have many different breeds that use the kennel runs. The hinge connection design is more forgiving when taller dogs are using the openings as their backs tend to touch the top of the opening. In doors without this hinge feature, flaps may wear prematurely if pressure is applied repeatedly at the flap connection point. The hinge also features a weather seal that helps eliminate drafts through the hinge mechanism. Read more Weather Stripping The Security Boss Pet Doors use a high density pile brush weather seal that lines the pet opening frame to eliminate drafts and keep out undesirables. This pile brush bridges the gap between the flap and the frame of your pet door. The pile brush can relax and lose it's rigidity, so it is recommended that you replace the weather seal whenever needed. Even under these conditions, replacing the brush is easy and requires little time. Read more Location & Compatibility The 4 Sided Profeesional Exterior Model is designed to be installed on the exterior side of the wall. This kennel door can be pairred with any guillotine door system! Pair them btogether and you will have controlled access as well as unparalleled energy savings! Read more