American Metal Products 3 in. x 4 in. B Vent Increaser

Manufactured by American Metal Products, a pioneer in the development and simplification of effective venting products since 1951. AmeriVent components are crafted for today's building and appliance requirements. We have taken the guesswork out of installation. This is the preferred, most efficient, economical, and easily installed chimney system in the industry.

• Designed for use with almost any HVAC system
• Made from galvanized steel for added durability
• Increaser includes a 1-year manufacturer warranty