Upgrade your gas-venting system with this rugged, 4-inch galvanized steel vent cap—designed to keep rain, debris and wildlife out while ensuring safe, efficient exhaust of combustion gases. Its top-round design and fire-proof acoustic seal make it ideal for natural gas or LP applications, delivering long-lasting performance even under heavy use.

Built to Type B standards, the cap features an inner aluminum liner and a tough outer galvanized shell that resists rust and corrosion. Rated for up to 100 million BTU/hour, it’s perfect for water heaters, furnaces and other gas-fired appliances (not for wood-burning or wall-furnace vents). Simple to install, this vent cap locks securely onto a 4 in. round flue, giving you peace of mind and reliable operation year after year.

Key Features

• Galvanized steel outer shell with aluminum liner for superior durability
• Top-round, Type B design for gravity-draft venting of natural gas and LP appliances
• Fireproof acoustic seal helps minimize noise and heat transfer
• Supports up to 100 million BTU per hour
• Keeps out rain, birds and pests
• Quick, slip-in installation on 4 in. round vent pipes