3 lb. Density Rigid Foam, 2 Gallon Set

3 lb. Rigid Foam is a 2-part polyurethane expanding foam which expands as much as 18X to create rigid lightweight castings, parts, and backfill reinforcement of other materials. This is a lightweight 3 lb. density rigid foam, which means a cubic foot of expanded foam will weigh 3 lbs. More Prop 65 Info