Belt drive whole house fan with white powder-coat finish shutter

2-speed, thermally protected 1/3 HP (horsepower) PSC (Permanent Split Capacitor) motor

Precision balanced aluminum fan blade assembly

4 fan blades for greater air movement

Includes 2-speed switch and wall plate

Joist-in or joist-out installation

Ceiling mount application only

Dual ball-bearing technology

Tough steel motor struts

Steel venturi for enhanced durability

24" whole house fan is appropriate for homes with up to 1800 sq ft (square foot) attics

Requires a minimum of 8 to 10 sq ft of net air exhaust vent area

30" whole house fan is appropriate for homes with 2000 to 3000 sq

ft

attics

Requires a minimum of 10 to 12 sq ft of net air exhaust vent area

36" whole house fan is appropriate for homes with attics over 3200 sq

ft

Requires a minimum of 12 to 14 sq ft of net air exhaust vent area

Veins run lengthwise on 24" and 30" - crosswise on 36" whole house fans

Center vein is stationary to allow no-cut joint installation

10 year limited warranty