use your saw to cut your plywood sheets down to fit each side of your utility sink. If your sink is against two walls, you'll only need two sides; if it is only against one wall, you'll need three ...
This wall-mounted utility sink was a filthy mess before @tinacesaro got her hands on it. To give the sink an affordable makeover, Cesaro says, "I used one coat of Kilz brand primer and then two coats ...