Master Flow 30BWHFS Whole House Fan, 6000 cfm, Aluminum

Used in place of air conditioning to reduce energy costs in homes over 1,000 square feet. 2-speed wall switch for convenient operation. Permanently lubricated center shaft ball bearings. Belt-driven by die-cast pulleys to isolate noise and vibration for quieter operation. Efficient, longer-lasting, thermally protected, permanent split-capacitor motor runs at 120 Volts. Balanced aluminum fan-blade assembly for quiet operation. Sturdy metal frame, pre-assembled 1 x 3 wood frame. Includes automatic Seal-Tite white aluminum ceiling shutter, installation hardware, plenum boards, and easy-to-follow DIYer instructions. This whole-house fan is installed on the ceiling between the attic and living space. Louvers close when the fan is not operating. UL/UL Canada Listed. Opening size: 34” x 34” x 11”. Vent up to 3,000 sq.ft. This whole-house fan is installed on the ceiling between the attic and living space. The louvers close when the fan is not operating.Belt drive isolates motor noise and vibration

Belt drive isolates motor noise and vibration

1/3 hp permanent split capacitor design for added power and long life