Reducing washers are for reducing knockout holes. These washers have raised flanges for a tight fit and are made of galvanized steel. PI308 reduces hole to fit appliance switch.

Diversitech Devco® Reducing Washer, 3/4 to 1/2 in Nominal, Steel, Galvanized

• Washers have raised flanges for a tight fit and are made of galvanized steel
• Reducing washers are for use when the raceway is smaller than the trade size of the knockout it is intended to enter
• Steel material provides installation integrity
• Electro-plated zinc for corrosion-resistance