... roof and wall insulation of house, warehouse, cold storage, factory. Medium duty, and higher strength. Foil: 7u / 3-way Scrim / FR ... roof and wall insulation of house, warehouse, cold storage, factory. Medium duty, good fire rating.DFR-201BFoil: 7u / 2-way Scrim / ... roof and wall insulation of house, warehouse, cold storage, factory. Medium duty, good fire rating.FWF-757Foil: 7u / PE / LDPE Woven: ...