The EIA/TIA/RoHS compliant, stand-alone floor rack shall be Lowell Model No. LER-2127-LRD. Overall measurements shall be 42.875"H x 27"D x 23.06"W with panel space of 21 rack units. Load capacity shall be 500 lbs. The rack shall include welded side panels with vents, steel top with vents, open base with grounding stud, one pair adjustable front mounting rails with printed RU increments, combination knockouts above and below rear opening, and provisions to mount an optional surface-mount front door or rear rails (ordered separately). The rack shall be manufactured in the U.S.A. with certified U.S. steel and have a black wrinkle powder epoxy finish. It shall be UL Listed to UL2416.