Plywood Boxes
Boxes Built to Survive a Sink Leak
The cabinet box decides whether a run stays square for years, so it gets more thought than the door. MDF is fiber and glue, and once water reaches it under a sink, the bottom swells until the finish cracks. We build boxes from furniture-grade plywood, switch to marine-grade plywood with its waterproof glue line for sink and vanity bases, and pair them with maple drawer boxes riding on full-extension slides.






