Gelco 17″ x 17″ Galvanized Single-Flue Chimney Cap 3/4″ Mesh Gelco’s single-flue caps are available in 3/4″ rugged mesh. Some sizes are available in 5/8″ (California) mesh. Gelco’s signature cross-braced lid and deep double channel base give it superior strength so you know your customer is getting the best chimney cap on the market. for the customer with budget in mind, you can’t go wrong with the galvanized painted black model. Features: Material: 100% 304 galvanized. 18 ga. base and mesh, 24-ga. lid. Lifetime Warranty on workmanship and materials, and three year warranty on rust through for galvanized. Save space in your service truck or store room. Specifications: Overall Dimensions: 17″ (W) x 17″ (D) x 8″ (H). Fits Outside Dimensions: 16-1/2″X16-1/2″ to 18-1/2″X18-1/2″. Mesh: 3/4″.. RETURNS NOT ACCEPTED.