5 Tier Vented Plastic Shelving, 54W x 24D x 86H, Nexelon FinishMfr #: PM24548N5 5 Tier Vented Plastic Shelving, 54"W x 24"D x 86"H, Nexelon Finish. Nexelite Starter Units are perfect for storing all your goods, materials and inventory. Sturdy frame comes in Nexelon finish. Polymer composition shelf mats are of a modular design allowing easy removal for cleaning. They have a vented open grid surface that is smooth and crevice free. Polymer material will never dent, chip, rust, or corrode. Open on all four sides