Perfect under-the-bed storage solution. This is a great way to maximise valuable house space. These 20 litre Really Useful Boxes are L 710 x W 440 x D 120mm.
They will fit three Type J Trays side by side (and either one 70mm Tray or two 35mm Trays high).
If you require a different size Insert, just order the 25mm and make a note on your order as to what size hole you would like.