OO-C-2858, FEDERAL SPECIFICATION, COOLERS, AIR, EVAPORATIVE (7 APR 1995)

OO-C-2858, FEDERAL SPECIFICATION, COOLERS, AIR, EVAPORATIVE (7 APR 1995)., This specification covers packaged type, evaporative air coolers consisting essentially of a centrifugal fan, an evaporative media, and a system for distributing water over the evaporative media, all contained in a metal, weatherproof cabinet.