Robertshaw 41-311 Ignitor Kit this unit is engineered for

this unit is engineered for 460-480V circuits

reducing vibration and mechanical wear on the inducer motor bearings

whereas black or gray springs cover different pressures within the same regulator body

or a blocked flue

Robertshaw 41-311 Ignitor Kit this unit is engineered forThe Robertshaw 41 311 Ignitor Kit is a professional grade Dryer Ignitor Series solution designed for high performance gas appliances. Engineered with a high purity silicon carbide (Crystar) element, this hot surface ignitor delivers dependable ignition by reaching optimal temperatures within 17 seconds. As a 120V AC component, it serves as a direct OEM replacement ignitor for a wide range of manufacturers, featuring 18 gauge nickel chrome lead wires