Combustion air switch
Draft proving switch
Switch closes when the combustion/booster motor runs creating a negative air pressure

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 3.78 inch
Height : 1.65 inch
Length : 4.09 inch

Item Weight: 2.08 ounce (View shipping rates and policies)
Shipping Weight: 2.08 ounce (View shipping rates and policies)

ASIN : B004M9AMMQ

Product Description

The pressure switch is also referred to as a combustion air switch or draft proving switch. 1.74. Switch closes when the combustion/booster motor runs creating a negative air pressure.