"Washboard surface" effectively removes dirt and debris from microfiber mop pads before wringing. Twist-valve empties contents without lifting. Smooth, non-porous surface helps prevent bacterial growth and cleans up easily. Buckets accommodate pads up to 18" in length. Capacity Range (Volume): 43 qt; Depth: 15 1/2"; Width: 26 1/5"; Height: 16".