Gelco Multi-Flue 5/8" Mesh Cap with 2-1/2" Overhang - 9" x 31" x 8" - Durable Chimney Cover for Fireplace & Stove Vent Protection - Weatherproof Roof Flashing Guard for Home & Outdoor Use

Was getting rain in my house after big storms, I had two flues that were recessed below the bricks, this product covered the entire chimney. Comes unassembled but very easy to assemble. Comes with concrete anchors which were great, but I ended up using some longer concrete screws and anchors. I didn't use any cement/caulking/silicone as the base where I was securing was fairly rough and I could not make it seal properly. Overall excellent product, great material, lifetime warranty.