Mecale 14-in Shutter Exhaust Fan 1400-CFM with Variable Speed Controller Steel Attic Vent Fan

1400 CFM Through Auto Shutters: Louvers swing past 50 degrees open when the fan runs and drop shut at power-off to lock out rain, debris, and drafts

All-Steel Powder-Coated Build: Electrostatic powder coating over a full steel body shrugs off moisture and weather where plastic fans crack and fade

60W AC Motor at 1520 RPM: Pushes air to 6.7 m/s while holding noise at or below 63 dB, sized for sheds, garages, greenhouses, and attic bays

Stepless Dial from Breeze to Blast: The included variable speed controller sweeps output smoothly from gentle circulation up to full 1400 CFM extraction

M8x60 Expansion Bolts Included: Mounts through a 14 in cutout behind its 17.1 x 17.1 in flange using the four bundled M8x60 expansion bolts