Heavy-duty 2 ft x 4 ft quick assembly tray stand. Absolutely no tools required. Can be assembled in 5 minutes or less. Accommodates all popular brand (ID) inside dimension trays and reservoirs including Flo-n-Gro® Duralastics® Botanicare® and more. Overall height is 25 in. Height from bottom bar to floor is 18 in without casters. Outside dimensions: 53 in length x 28.5 in wide. Inside dimensions: 51 in length x 26.5 in wide. Tray sold separately and may fit differently depending on brand. US Patents: 8 714 498 D756 690 and 9 084 478; Chinese Patent: 201280018267.2; Patents Pending: 29/562 014 US20150320200 AU2012290715 EP2725947 and HK1193554A; and PCT Application: WO2013/019268.