Dog Door for Large Dogs - Extra Large 10.5 x 15 Inch Flap - Telescoping Frame - Durable Plastic for Interior/Exterior - Easy Install

【Durable Construction】: Crafted with a sturdy thermoplastic frame; resistant to cracking, warping, and weathering; designed for long-lasting performance in both interior and exterior applications; ideal for frequent pet use. 【Adjustable Frame & Size】: Telescoping frame adjusts to fit door thicknesses from 1 3/8” to 2 ¼”; extra-large flap size of 10.5 x 15 inches accommodates large breed dogs up to 120 pounds; dimensions of overall opening are 13.5” x 19.5” 【Secure & Controllable】: Includes a lock-out slide to restrict pet access when needed; floating sill design creates a tight seal; tamper-proof mounting system for enhanced security; provides peace of mind and controlled pet movement. 【Clear Visibility & Easy Access】: Features a transparent vinyl flap allowing pets a clear view and effortless passage; promotes independent access for pets; minimizes hesitation and ensures a smooth transition. 【Simple Installation & Hardware】: Comes complete with all necessary mounting hardware and detailed installation instructions; designed for easy installation in wood, metal, or glass doors; suitable for DIY projects; provides a convenient pet access solution.