THE LID IS DESIGNED TO BLOCK ODOR MOVING UPWARD FROM THE DRAIN, not to hold water. , it can holds water for a short time if you it to fit tightly enough.-PERFORATION: 0.08 INCH Dia holes. Efficient anti-clogging lets liquid flow smoothly into the drain while it blocks food particles.4.5 inch OVERALL Dia, includes 2.75 INCH -perforated basket area contoured by a 2-ply metal sheet flat rim to rest over sink's drain.STURDY AND DURABLE: Both the sink drain strainer and lid are made of stainless steel construction which is built to last EASY TO CLEAN: Just empty the basket and wash it with warm soapy water to make the mirror finish shine impeccable over time. Dishwasher safe.size:filter:11.5cmdeodorant cover:7.5cmMaterial:stainless steelcolour:SilverPackage Contents:2 x filter2 x deodorant coverOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.