MIL-H-16235C, MILITARY SPECIFICATION: HEATER, VENTILATION, DUCT TYPE, SHIPBOARD (08-MAY-1963) [S/S BY MIL-PRF-22594]

MIL-H-16235C, MILITARY SPECIFICATION: HEATER, VENTILATION, DUCT TYPE, SHIPBOARD (08-MAY-1963) [S/S BY MIL-PRF-22594]., This specification covers duct type ventilation heaters for use in heating, ventilating and air conditioning systems aboard ship.