"This Ventamatic Dual Temp/Humidity Control helps power attic ventilators equalize inside and outside attic temperatures to remove excess heat from your attic in summer and humidity in winter. Dimensions L x W x H in. 7 x 4 x 2, Length ft. 9/16. Year-round control removes excess humidity and protects roofing components Controls up to three units, not to exceed 10 amps"
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