Center Drains View All Center Drains Grate Types Waterproofing Flow Rates Sizes Finish/Color Other Features Moor MD 4-2: 4×4 Standard Kit Complete kit with Drain Body 4″ x 4″ Internally Pitched Stainless Steel Strainer and Throat Waterproofing: PVC/Vinyl liner, Lead/copper pan, Hot mop, Rubber liner, Fiberglass Available in Satin Stainless, Polished Stainless, Satin Bronze, Oil Rubbed Bronze, Matte Black Moor MDB 4: 4×4 Bonded Kit Complete kit with Bonded Flange 4″ x 4″ Internally Pitched Stainless Steel Strainer and Throat Waterproofing: Liquid membrane, Fabric sheet Available in Satin Stainless, Polished Stainless, Satin Bronze, Oil Rubbed Bronze, Matte Black