Bathroom vanity cabinets typically do not have back panels. The back is left off to provide access to plumbing fixtures that often emerge from the back wall. ... When designing a vanity cabinet, it's common to build it with only the exposed side finished.

Do sink base cabinets have a back?

A sink base cabinet is a cabinet that has been designed to use with a sink. ... The cabinet does not have a back panel, which allows plenty of room for access to the plumbing. Sink base cabinets also do not have drawers, which interfere with the water lines, waste traps and any other pipes that are under the sink.

Should a bathroom vanity have a back?

Unless you have a pedestal sink that doesn't rest against the wall, you do need a backsplash for your bathroom vanity. The reason is practical: a bathroom backsplash protects the wall behind the sink from rot, mold and mildew. Beyond that, a backsplash can provide a lot of design appeal.