1) 4Way switch mode for flexible control Our cat flap includes dual knob style locks with four operating modes: open, locked, inonly (cat can enter but cannot exit), and outonly (cat can exit but cannot enter). This gives you precise control over when your pet can come and go. 2) Fits cats and small dogs Constructed from quality PC for durability and weather resistance. Outer size: 11.8 x 11.8 inches; inner opening: 6.5 x 7.9 inches (W x H). Suitable for cats and some small dogs up to 6 kg (13 lbs). The design is sturdy and long lasting to withstand daily use. 3) Energy saving and weather protection Features a weatherproof brush seal with magnetic closure and a UVresistant flap. This configuration helps block wind and rain and reduces heat transfer, aiding your home's energy efficiency and comfort in both winter and summer. 4) Easy installation and quiet operation Comes with detailed installation instructions to simplify setup and requires fewer tools. The sliding door operates quietly, delivering smooth, unobtrusive access for you and your pets. Specifications Material: PC (polycarbonate) Outer size: 11.8 inches x 11.8 inches Inner opening: 6.5 inches x 7.9 inches (W x H) Suitable for: Cats and some small dogs up to 6 kg (13 lbs) Features: 4way switch modes; weatherproof brush seal; magnetic closure; UVresistant flap Operation: Sliding door with quiet action; easy installation with minimal tools Use scenarios Home energy efficiency: Install on an exterior door, wall, or window to allow pets to enter and exit while limiting drafts when the flap is closed. Pet training and access control: Use inonly or outonly modes to manage pet movement during feeding times, naps, or when you want to supervise entry. Multipet households: Coordinate access for a cat and a small dog by using different modes to prevent unwanted crosspets interactions or to reduce conflicts, while maintaining convenience for both pets and people.