Simply put the Response Plug into the drain and put the grate back on. It is designed to float up and allow routine wash water to flow through. If a hazardous spill occurs, just take the plastic push rod, or a screw driver or pencil or other handy tool and slide it through the grate to push the Response Plug down into the drain. Immediately seals off the drain .
Works with fuels, oils and may chemicals. Neoprene blend and plastic - will not spark.
||Fits Drain Sizes
Plug Size -top dia./bottom dia.
||3 inch/1 inch
||4 inch/2 inch
||5 inch/ 3 inch
||7 inch/5 inch