

The Pro-Air Duct Sealant – UL 181 AM-BM Listed (Part Number 800-009) is a high-quality, one-gallon indoor/outdoor water-based duct sealant in white color. Approved by UL181A/B standards, this water-based fiber-reinforced mastic offers long-term flexibility and strength. It's suitable for metal HVAC duct systems, fiberglass duct board systems, and flex duct systems. This sealant can withstand pressures up to 10in.