The PetSafe Staywell 640 Aluminium Large Dog Flap is designed to provide your pet with freedom while maintaining control and weather protection. This durable pet door features a solid aluminium frame with reinforced corners, built to withstand heavy use and accommodate multiple pets. Easy to install, the aluminium frame ensures stability. The flexible, soft flap is tinted and adjustable for seamless pet access. Equipped with a magnetic flap closure and pile weather stripping, it forms a weather-resistant seal to keep your home comfortable. A closing panel is included for enhanced weather resistance or to control pet access. Specifications: Suitable for all doors up to max 2" (50mm) Overall size: 502.6mm x 329.1mm Cutout Size: 451mm x 277mm Maximum pet shoulder width: 264mm