RL Worker Pigeon Hole Unit 20 Holes The Rapid Worker range is constructed of environmentally friendly melamine . Strong and durable and backed by a 5 year warranty. The 20 hole pigeon hole unit, comes with adjustable shelves so you can vary the size of the holes to suit. Features Adjustable Shelves E0 Enviroboard Dimensions: 1040mm(w) 380mm(d) 1040mm(h)