Fast, toolfriendly installation: interior dog door designed for quick, straightforward mounting so you can install it yourself without complicated modifications. Keeps pets safe and contained: provides a controlled opening between rooms to reduce escapes, limit access to hazardous areas, and make supervision easier for pet owners. Durable rubber flap: made from strong, flexible rubber that holds up to repeated use while creating a tight seal to help reduce drafts and noise. Weatherresistant construction: rubber flap and components are weatherproof and weather resistant for reliable performance in varying indoor temperature and humidity conditions. Secure mounting: four screw holes at the of the flap for stable attachment and reliable operation over time. Versatile replacement option: compatible as a replacement flap for many cat doors as well as interior dog doors, simplifying repairs or upgrades without replacing the entire unit. Compact, unobtrusive design: fits typical interior pet door openings and works well in doors between rooms, laundry areas, or vestibules where a permanent exterior door is not needed. Lowmaintenance: easy to clean and inspect; the rubber material resists buildup and can be wiped down quickly. Practical use scenarios Apartment or home interior: install between a kitchen and a utility room so your dog can move while keeping the main living area closed off. Replacement : swap the rubber flap into an existing cat or smalldog door to restore proper function without buying a full assembly. Room separation for safety: create a dedicated pet zone (bedroom, laundry room) to prevent pets from accessing stairs, chemicals, or visitors. What to expect Function: a flexible, secure flap that opens easily for pets and reseals to limit drafts and noise. Compatibility: suitable as an interior dog door flap and as a replacement flap for many cat doors. Material and performance: strong rubber construction, weatherproof and weather resistant for consistent daily use. If you need a simple, reliable flap that restores function to an existing pet door or adds an easytoinstall interior pet passage, this rubber flap offers durable performance and straightforward mounting.