DiversiTech Pro-Air 800-009 Duct Sealant, Paste, White, 1 gal, Pail

The DiversiTech® 800-009 water-based fiber reinforced duct sealant is formulated for indoor or outdoor use. Meets UL 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.