Learn how to easily install PermaDrain's Low Pro Locking Dome Strainer in shallow floor sinks and mop sinks. Our Lower Profile dome provides enough clearance for our Safety Basket, allowing you to cover the floor sink to prevent a trip hazard of the floor sink were in an open walkway. Also, the Low Pro Dome does not interfere the the casters under a mop bucket, allowing you to store the mob bucket in the mop sink.