Safco Products 5242BL Commercial Wire Shelving Extra Shelves 48"W x 18"D for use with Basic Unit 5241BL, sold separately, (Qty. 2) , Black Extra shelves for Model 5241BL Commercial Wire Shelving Shelves adjust in 1-inch increments with snap-together clips Per shelf capacity of 500-pound (with weight evenly distributed) Easy installation without tools Packed 2 per carton