Dimensions: 9" x 19" x 3"
Each Fan Ventilates: 1650 cubic feet
Opening Size: 8" x 16"
Power Consumption: 120VAC 60Hz 0.2 Amps - 24 watts.
Cord Length: 17"
Features:
- Quiet 110 Cfm Ball Bearing Motor
- Super Tough Polypropylene Construction
- Dries Crawlspace Gradually
- Humidity Sensor For Worry Free Operation
- Thermostat Shuts Fan Off At Low Temperatures
- U.L. Approved Means Assured Safety
- Can Help Stop Mold Growth
- Upgrades Your Present Foundation Vent
- Easy Installation In A Variety Of Constructions
- Mounts Behind Foundation Vent For Invisible Operation
- Quick And Simple Solution For Under ventilated Crawlspaces
- One Year Limited Warranty
Size Needed:
To aid natural crawlspace ventilation, mechanical ventilation should exchange the crawlspace air at least four times an hour. To determine this, multiply the square footage of the crawlspace by the height to calculate the cubic feet then divide by 15 to determine the CFM needed to properly ventilate your crawl space.
Formula:
Length x width x height = total cubic feet of crawl space
Divide = total cubic feet of crawl space / 15 = CFM needed for proper foundation ventilation.
Example:
40' x 40' x 2' crawl space = 3200 cubic feet of area
divide 3200 cubic feet by 15 = 213 cubic feet per minute (cfm) of air flow needed to ventilate your crawl space
This Crawl Space Ventilator is rated At 110 cfm for each unit. Therefore, 2 units would be required to properly ventilate a crawl space of this size. As with all powered exhaust systems, proper intake air vents should be used. Generally, one air intake vent is recommended as a minimum for air intake. Having 3-4 intake vents would be ideal. These crawl space ventilators should be installed on opposite ends of the intake vents, to allow air movement across the entire space to be ventilated.
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