MIL-C-21100 Revision D, October 4, 1990
CLEANER, VACUUM INDUSTRIAL, EXTERNAL FILTER TYPE
Includes all amendments and changes through Cancellation Notice 1, March 15, 1999
Additional Comments: CNCL NO S/S
This specification covers external filter type, industrial tank model vacuum cleaners for removing dirt, dust, and other dry particles by suction or blowing action, with a filter bag which is attached to the exhaust port of the unit.