COSTCO or AMAZON Alera 4-Shelf Wire Shelving Rack, 48" x 18" 72", NSF, Black Anthracite
Item #598779 Model #ALESW604818BA
Yes, they sold quite a few years ago on eBay for a little less, but I haven't seen that deal any time recently. It's a solidly built wire shelving unit, currently have 3 in the basement and was looking for my 4th.
48" W x 18" D x 72" H
Strong Welded Wire Construction
NSF Food Equipment Certified For Both Wet And Dry Storage
Holds up to 600 lbs. per shelf when evenly distributed
Overall Unit weight capacity of 500 lbs. when using casters