F-F-1962, FEDERAL SPECIFICATION: FILTER, AIR EXTENDED MEDIA AREA TYPE, FOR USE IN AIR DISTRIBUTION SYSTEM (01-MAR-1978) [NO S/S DOCUMENT]

F-F-1962, FEDERAL SPECIFICATION: FILTER, AIR EXTENDED MEDIA AREA TYPE, FOR USE IN AIR DISTRIBUTION SYSTEM (01-MAR-1978) [NO S/S DOCUMENT]., This specification covers factory assembled air filters of the extended media area type with externally supported, non-supported, or self-supporting cartridges installed in permanent corrosion resistant metal holding frames or housings for removal or particulate matter in air conditioning, heating and ventilating systems.