GAF STRUCTODEK High-Density Fiberboard Roof Insulation Cover Board, Primed Red, 6-Side Coated, 1/2 in x 4 ft x 4 ft

GAF STRUCTODEK High-Density Fiberboard Roof Insulation Cover Board, Primed Red, 6-Side Coated, 1/2 in x 4 ft x 4 ft