Sturdy cart with two handles and 3" locking casters for ease of mobility. 3-point door lock with 2 keys for each tub. Includes 4 Premium Tech Tub2s for holding 24 devices . Tubs break apart using clips. Ideal for sharing small sets of devices. Cable management on back. Power timer for charging (requires 1 outlet). 43"H x 34"W x 19"D. Lifetime tub warranty. 1-year electrical components warranty. 5-year frame warranty.