The bottom tray is 203mm wide (8inches) 1m long fitted with 300mm of miners moss, with galvanised diamond mesh on top, then 700mm rectangular vortex matting. The top box is 195mm wide by 510mm long. The spray bar is 25mm dia. With slots. The material is 1.6mm marine grade aluminum. The pump being used in the pics is a 2000gph bilge pump
Please note the pump,hose and camlock fittings are extra.