Uforic Heavy-Duty Chimney Cap 21" x 13", Adjustable, Rust-Proof Stainless Steel Metal Flue Cover, Pre-Drilled Holes, Mounting Strips

Expanded Coverage Area: Perfect for wider chimney openings, providing maximum stability and a snug, weather-tight fit. With adjustable mounting brackets and long bolts, this cap (13" x 21" x 10.6) offers a versatile fit for chimneys ranging from 11" x 20.5" to 15.4" x 23.6", preventing gaps and ensuring stability. Superior Durability: Constructed from industrial-grade 304 stainless steel, resisting rust, corrosion, and temperature fluctuations. Maximum Chimney Protection: Keeps out birds, squirrels, raccoons, leaves, and excess moisture, preserving chimney function. Efficient Ventilation System: The precision-cut mesh improves air circulation, ensuring a cleaner and safer burn. DIY-Friendly Installation: Comes with adjustable straps, screws, and gloves, making setup quick, secure, and hassle-free.