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Broan Roof Mounted Attic Fan 355BK

Broan 355BK 4.3 Amp, Black, Roof Mounted Powered Attic Ventilator
Item #: 355BK
Retail: $244.24 Price: $162.83
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Roof Mounted Attic Fan 355BK

Install a Roof Mounted Attic Fan 355BK Black Plastic Dome 1000cfm to help the trapped air in your attic that can reach 200 degree's. PVC Roof Black domes means the attic fan is less noticeable. Too often, attic ventilation is overlooked, not to mention ignored as a place for energy savings. That's where the Roof Mounted Attic Fan by Broan attic fan and ventilation's solutions make sense. With Broan's Roof Mounted Attic Fan solutions, it's still a full 60 degree's cooler in the attic on a 90 degree day. That's why attic Roof Mounted Attic Fan ventilation is critical to making any home more comfortable while lowering energy costs.


  • Attic Size: Up to 1400 sq. ft.
  • Amps: 4.3
  • CFM: 1000
  • Height: 8"
  • Dome Diameter: 23-1/4"
  • Dome Material: PVC

Select one that best suits the attic size and shingle color. sold seperatly choose from 350/355/356/358 with a brown or black dome. the 349 has a metal dome

Roof Mounted Attic Fan 355BK

Amperage 4.3
Attic Size 1715
CFM 1000
Depth 22.25
Dome Material Plastic
Eco Friendly No
Energy Star No
Heater No
Height 8
Humidity Sensing No
Includes Thermostat 120, Yes
Inlet Area 4.0
Installation Type Roof Mount
Kitchen Approved No
Length 2
Material Aluminum, PVC
Mount Type Wall Mount
RPM 1100
Solar No
UL Listed Yes
Width 22.25

Specification Sheet
Installation Guide

How to calculate the cfm needed for your attic application

One square foot of unobstructed inlet area is required for every 300 cfm output.

Multiply your attic square footage by .7 for minimum air delivery need to exhaust the attic. For darker roofs add 15% to the cfm you just calculated. For exceptionally large attics use 2 fans and have sufficient exhaust or it will put the heat back down into the house.

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