The certification standard every bathroom vanity in America is sold against tests a door. It does not test the box.

In this episode we give you all three answers up front. One, every moisture test in ANSI/KCMA A161.1 is run on a door, a door edge or a finished surface. Nothing tests the sides, the back, the deck or the toe kick, which are the parts that actually get wet. Two, the plumbing code fixes exactly two numbers: 21 inches of clear floor in front of the sink and the toilet, and 15 inches from either centreline to a side wall or a vanity. Three, water does not get in through the surface. It gets in at the cut edges.

Then we go through what the badges on a product page really mean, the sum that tells you the widest vanity your bathroom can take, why nobody has ever published a vanity depth, why the ADA number peop ...