Balt Mobile Laptop 20-Unit Charging Station Stations feature built-in UL/CSA-approved electrical outlets for each laptop compartment Locking doors fold back and stay open with a magnet while loading or unloading laptops Laptop spaces measure 13.63"W x 14.75"D with the 20 laptop cart. Cabinets includes 4"swivel casters (two locking) for easy maneuverability. Has achieved GREENGUARD GOLD Certification