The medicine cabinets are completely custom-made and fitted--we had to work between studs in the existing wall, and at one point the cabinets are only about 2" deep--but overall they are about 4" deep. The cabinet frames are painted (gray) mdf board and painted wood trims. The hinges are frameless-style cabinet hinges, which allowed us very small clearances between the fixed mirror and the operable ones. Mirrors were fitted and mounted to the mdf panels and are flush with the surrounding tile--gaps were minimized as much as possible. We originally planned for touch-latch operation, but the client didn't want fingerprints on the mirrors, so we opted for small L-clip pulls instead.