Imagine the convenience of a doggy door like the PetSafe Never Rust Wall Entry Pet Door in your home. These doggie doors are a unique solution designed for homes where installing a pet door into a human door might not be feasible. Crafted from durable plastic, the doggy door wall entry stands out for its rust-resistant properties, unlike other steel options. This wall for dogs ensures the longevity of the product, saving you from frequent replacements. Featuring a telescoping design for wall installation, the large doggy door for wall can be used in walls that are 4 3/4 - 7 1/4 in thick. This dog doors for large dogs design offers flexibility in installation, accommodating different wall thicknesses. Installation of the doggy door for wall is a breeze, easily fitting into all types of interior and exterior walls. These wall mounted dog doors save you the cost and hassle of professional installation. Boasting energy efficiency, these dog doors feature a double-flap that provides weatherproofing and a slide-in closing panel for extra insulation when your pet is not using it. The petdoor's PVC frame withstands UV exposure, further enhancing the door's durability.