【WEATHERPROOF & ENERGY-EFFICIENT】​​ Engineered with heavy-duty silicone edges and reinforced magnets, our pet door flap creates an airtight seal to block rain, wind, and drafts. Protect your home’s temperature year-round while saving on energy bills—no more chilly floors or escaping AC 【5-MINUTE INSTALLATION, NO TOOLS NEEDED】​​ Replace worn-out flaps in seconds! Pre-drilled holes align perfectly with PetSafe PAC11-11039 frames. Just snap into place—no screws, drilling, or DIY stress. Even first-time pet owners can upgrade effortlessly ​​【EXACT FIT FOR PETSAFE MODELS】​​ Designed to replace ​​Medium&Large PetSafe Extreme Weather Door PAC11-11039​​ (16 7/8" x 10 1/8"). Guaranteed compatibility with Freedom Aluminum/Wall Entry/Plastic PetSafe doors. Includes 5 adjustable fasteners to customize snugness for cats or mid-sized dogs ​​【RIP-RESISTANT DURABILITY】​​ Say goodbye to torn flaps! Military-grade PVC core flexes 50,000+ times without cracking. UV-resistant material won’t yellow or warp, even in harsh sun or sub-zero temps. Built to outlast chewers, scratchers, and daily zoomies ​​【LIFETIME SUPPORT + 90-DAYS WARRANTY】​​ Shop with confidence: We replace damaged flaps ​​free for 90 days​​. Got a unique door? Our 24/7 US team sends custom-fit solutions fast. Join 50,000+ happy pets (and humans!) enjoying draft-free naps DOG DOORS