There are 3 main soakaway crate sizes in the industry we can offer all variants at BP Plastics Ltd Polypipe / Polydrain 1000mm x 400mm x 200mm (0.2 cubic metre) Pennine Aquastorm 1000mm x 1000mm x 400mm (0.4 cubic metre) Brett Martin 1200mm x 600mm x 347mm (0.25 cubic metre) BP Plastics offer crates in different load bearing from light duty 20 tonne to heavy duty 65 tonne, we can also offer many specialist options (but that can of worms we don’t want to open here in our simple guide)