Original appliance trade vintage catalog for VACU-MAID INC. Main office located in Ponca City, OK. Manufacturer of Central Vacuum Systems for commercial, industrial, homes and apartments, hospitals and nursing home use. Features, components, systems selections, typical industrial specification given. This unique old 1982 four page architectural specifications brochure would make a marvelous addition to your engineering collection. Pages are loose and contain a small amount of residual glue on edge.