HH-I-1972/GEN (NOTICE 1), FEDERAL SPECIFICATION: INSULATION BOARD, THERMAL, FACED, POLYURETHANE OR POLYISOCYANURATE (07 FEB 1991) [S/S BY ASTM-C1289]
HH-I-1972/GEN (NOTICE 1), FEDERAL SPECIFICATION: INSULATION BOARD, THERMAL, FACED, POLYURETHANE OR POLYISOCYANURATE (07 FEB 1991) [S/S BY ASTM-C1289].