Pro-Air Duct Sealant - 1 Gallon Pail
The DiversiTech 800-009 water-based fiber-reinforced duct sealant is formulated for indoor or outdoor use. Meets U.L. Class 1 rating and local codes while featuring long term flexibility and strength. It can be used on metal heating, ventilating, and A/C duct systems as well as fiberglass duct board systems and flex duct systems. Recommended for use to 10 in. of water column pressure without the need for fiberglass mesh reinforcement.