Unitherm’s product wash sinks include a removable perforated tray to keep the product 1 inch from the bottom of the sink. These sinks are knee operated. As with all Unitherm designed sinks they sit away from the wall, to eliminate breeding grounds for insects and bacteria. All sinks are manufactured from heavy-duty 14 Gauge 304 Stainless Steel, matte finished, fully welded, crack and crevice free. The sinks ship fully plumbed and tested, ready for install.