This Rhino Pro commercial knock tube is sturdy and holds a lot of used grinds.Easy to clean and easy to empty.      Features:- Separates into three parts for easy cleaning- Small vents at the base of the knock bin prevent a vacuum from forming when a plastic bag has been placed inside- Rubber base prevents slipping when knocking out portafilter.- Made from hard-wearing polypropylene- Easy to clean just rinse under a tap.- Made of tough polypropylene and a solid nylon knock bar! - No nuts or bolts.Dimensions:Height: 860mmWidth: 220mm baseWidth: 18mm bodyWeight: 3.35 gross weightLarge kraft box     Material:Polypropylene base 80% / food grade silicone rubber 20%