Safco Products 7752GR E-Z Sort Mail Station Riser for use with Sorting Table, sold separately, Gray E-Z Sort modular mailroom sorter riser Mail organizer riser 14"H Heavy-gauge steel with durable powder coat finish Supports one or more Safco Products Sorter Modules Model 7751GR, sold separately For use on top of Safco Products Sorter Table Top Model 7750GR and Table Base 7749GR, sold separately