3Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel Steel Frame and Telescoping Tunnel Extreme Weather Dura

Give your dog the freedom to roam while you maintain control with this 3-flap dog door featuring a sliding lock panel.

• Ultra-durable rust-resistant construction with laser-welded steel and aluminum alloys for long-lasting security and reliable performance.
• Advanced 3-flap insulation guards against drafts and extreme weather, helping keep your home comfortable and energy efficient.
• Easy universal fit and installation for doors from 1.2" to 2" thick, pre-assembled with templates and clear instructions.
• Secure sliding lock panel provides instant access control while your pet enjoys independent movement and peace of mind.