MIL-U-17691D (NOTICE-1), MILITARY SPECIFICATION: MILITARY SPECIFICATION: UNIT HEATER, AIR-CIRCULATING, STEAM - HOT WATER (29-APR-1994) [S/S BY S-U-2833]
MIL-U-17691D (NOTICE-1), MILITARY SPECIFICATION: MILITARY SPECIFICATION: UNIT HEATER, AIR-CIRCULATING, STEAM - HOT WATER (29-APR-1994) [S/S BY S-U-2833]., MIL-U-17691D, dated 23 May 1988, is hereby canceled. Future acquisitions
for air-circulating unit heaters should refer to s-u-2833.