Our General Duty crate is suitable for most situations subject to vehicular use from car parks right up to major roads. With only 2.5 crates to a m3 it is fast to install and the use of the unique inners and outers allow the water to flow in three dimensions without restriction whilst still maintaining the strength of the closed system.

On larger tanks the StormMaster General Duty 40T will be supplied as inner and outer crates – these inner crates allow the water to flow freely throughout the structure and allow silt & inspection routes (if required) to be created through the structure for inspection & jetting.

The outer crates are installed on two sides of the structure before infilling with the open crates with cones facing upwards, the open crates can then be turned through 90 degrees and simply clipped onto the male/female sockets created before the yellow clips between the units are tapped home. This enables large structures to be created very quickly and does away with the need for side plates as all sides of the structure are created using the closed crates.