Hardcast has released a three-page “Tech Tips” flier on the company’s liquid sealants and the products’ advantages for duct sealing. The flier explains the UL standards that cover duct sealing and the difference between being “UL listed” and lesser categories, such as “recognized.” Testing requirements are explored in detail. The flier also covers the additional tests and certifications Hardcast’s products have received, including those from NSF International and the city of Los Angeles.

The full publication is here.