4-Way Locking Indoor/Outdoor Pet Door Kit for Cats and Small Dogs with Telescopic Frame Four-way door with four locking modes - Telescopic frame fits doors with thickness from 1.25" to 1.75" - Great for cats and small dogs up to 15 pounds - Weatherproof seal keeps out draft and saves energy - Brush strip ensures quiet closure to eliminate noise and prevent startling your pet - Includes screws for installation