Rectorseal GDL3000 3" Guardian Drain-LockRectorseal GDL3000 Guardian Drain Lock is designed specifically for commercial floor sinks to protect and prevent debris from clogging and backing up plumbing lines. Floor sinks do not come with the ability to screw or lock down strainers. Anyone can access and remove or discard strainers allowing debris to pass through the pipes, leading to clogs. Guardian Drain Locks are reliable and lockable to prevent damage. Features CLOG PROTECTION: Protects