our premium knock box made from wrapped stainless steel, smooth finish with soft edges. Knock bar housing is extremely secure with 6 fixings each side. Knock box feet are fitted/fixed with screws. Silicone compound knock bar for silent operation and long-life. Ventilation holes mean no mouldy coffee pucks Seat your grinder on top of this knock box without the grinder tray. You can then simply sweep any loose coffee grounds through the holes and into the drawer. Drawer Dimensions: Height: 106mm x width 258mm x depth 382mm WEIGHT 4KG