The TrekDror stacking kit allows you to easily and safely stack and secure multiple TrekDrors on top of each other. The kit consists of 4 flat stacking brackets, 16x M6x20mm bolts which are easily fitted into pretapped holes in each TrekDror unit. Stacking the TrekDrors allows you to maximise the space in your van or workshop and keep your tools more organised so that you can work more efficiently. All you need is one 10mm socket or spanner.