Sorrento Series Files + Storage by Mayline Low Wall Cabinet has one internal shelf in each compartment that adjusts to 5 different positions on 1 1/4″ increments. Does not lock. Executive Buffet Cabinet has one internal shelf in each compartment that adjusts to 3 positions and 2 1/2″H increments. Does not lock. Lateral files feature interlock system allowing only one drawer to open at a time. Standard gang lock provided. SLC and SBUF have wood doors (Bourbon Cherry) or frosted glass doors (Espresso). SBQ5 and SB5 have 1″ thick shelves.