The filter housing and plenum shall be fabricated from 16 gauge steel, reinforced and braced for rigidity. Housing shall be furnished with suspension support fittings to receive 3/8” threaded rod hangers supplied by others.
The fan cabinet shall be fabricated from 16 gauge steel depending on the configuration. Fan cabinet shall be furnished with minimum four (4) suspension support fittings to receive 3/8” threaded rod hangers supplied by others.
Housings shall be finished with a white protective enamel and sealed at all joints in the positive pressure area with a silicone sealant.
All interior surfaces of cabinet shall be acoustically lined with a non-shedding insulation and secured with adhesive. All exposed edges and joints shall be sealed to prevent fraying.
Blower shall be belt driven, forward curved centrifugal type, dynamically balanced and tested prior to being installed within cabinet.
Bearings shall be sealed ball type with locking collar.
Steel shaft shall be provided with flats for blowers and keyway to secure driven pulley.