EASY ASSEMBLY. WHEN OPENED YOUR MONITOR AND A 24 1/2""W X 11 1/8""D WORK SURFACE IS REVEALED WITH AMPLE SPACE FOR A KEYBOARD (UP TO 2 1/2"" MAX HEIGHT) AND WRITING SURFACE. THE MONITOR INTERIOR DIMENSIONS ARE 24 3/8""W X 10 1/4""D X 19 1/2""H AND CAN FIT MONITORS UP TO 24"". ALSO FEATURED ARE BOTH LEFT AND RIGHT RETRACTABLE 10""W X 7 3/4""D MOUSE TRAYS PROVIDING EVEN MORE WORK SPACE. THE MIDDLE LOCKING CABINET CAN BE USED FOR STORAGE OR FOR YOUR DESKTOP PC. THE MIDDLE CABINET INTERIOR MEASURES 24 3/8""W X 9""H X 21""D LARGE ENOUGH FOR ALMOST ANY DESKTOP COMPUTER. IT COMES WITH FRONT AND REAR LOCKING DOORS FOR ULTIMATE CONVENIENCE. MIDDLE CABINET DOOR OPENINGS MEASURE 22""W X 8 1/2""H. THE BOTTOM CABINET ALSO INCORPORATES A FRONT A REAR LOCKING DOOR AS WELL AS A HEIGHT-ADJUSTABLE SHELF FOR PERIPHERALS OR OTHER ITEMS. MOVES ON 4 INDUSTRIAL SWIVEL CASTERS (2 WITH BRAKES).