MIL-STD-1407B, MILITARY STANDARD: HEATERS, VEHICULAR COMPARTMENT; HEATERS, COOLANT, ENGINE; HEATERS, SPACE; HEATERS, DUCT-TYPE (17 DEC 1985) [S/S BY M

MIL-STD-1407B, MILITARY STANDARD: HEATERS, VEHICULAR COMPARTMENT; HEATERS, COOLANT, ENGINE; HEATERS, SPACE; HEATERS, DUCT-TYPE (17 DEC 1985) [S/S BY MIL-HDBK-1407]., This standard covers the heating capacity (expressed in British Thermal Units per hour, Btuh) and general application characteristics for heaters with various capacities and operating characteristics.