Density 6lb/ft3. Low density polyisocyanurate rigid foam. CORAFOAM® Low density polyurethane and polyisocyanurate foams are rigid foams mainly used with thermal insulating purposes, thanks to their low thermal conductivity values and their high insulating power. (CORAFOAM® R) A new family of foam particularly developed for carving industry, especially set and stage designing, scenography.(Source: DUNA-USA Inc)