- Sizes: 12" thru 60" direct drive.
- Model Designations: WBF-E-Exhaust, WBF-S-Supply, WBF-ED-Exhaust with damper, WBF-SD-Supply with damper.
- Construction: Fiberglas, Hetron 99P ® polyester resin, Class 1 flame spread of 25 or less with UV inhibitor. Standard color is gray.
- Wall Box: Fiberglass construction with turned in flanges for rigidity. The wall box design facilitates the attachment of accessories such as dampers, guards, etc. and is shipped completely assembled. This "one-piece" design reduces installation costs. Synthetic veil provides smooth interior for air flow and creates a resin-rich, impenetrable surface to most airstream corrosives.
- Venturi: A fiberglass venturi orifice is molded into the wall box design to increase airflow efficiency.
- Fan Propeller: Highly efficient, air foil and helical shaped fiberglass reinforced blades attached to a fiberglass hub. Bushing protected by a removable cap for easy maintentance.
- Motor Mount: Heavy duty fiberglass construction.
- Motor: NEMA Design B, severe duty, industrial continuous duty, totally enclosed with sealed ball bearings.
- Hardware: 304 Stainless steel, encapsulated with protective coating.
- Face Flange: 1-1/2" fiberglass flange.
