Please note : C Channels are NOT to be used with green/wet timber , they are not an alternative to use wet timber . Timber must be below 15% moisture content Our channels are a proper reinforced c channel, NOT an L bracket or something similar. These cheap alternatives will NOT provide stability . Using cheap steel or steel that has not been designed for timber movement can be a disaster waiting to happen, as movement in timber can potentially bend cheap alternatives . This process can not be altered and it’s one of the most important processes you can pay attention to depending on the job and timber itself ( ask us for further info around this ) Prevent your tables from moving on you over time. The channel comes in lengths of 800, 900 ,1000,1100 and 1200 If you are require a size that does not match up to any of these you can easily cut them to length using a metal saw. The channel has been powder coated black to give a hard wearing finish. Follow the link below for installation. Specifications: Dimensions (OD)- 5mm Thickness 40mm Width 20mm Height Installation - Min. Recess Depth 15-17mm (top flat bar exposed) Full Recessed Depth 22-24mm (flush/slightly below surface) Number of Slots/Fasteners Required (per channel) 800mm & 900mm - 5 1000mm & 1100mm - 6 1200mm - 7 Channels are 6mm thick steel and 40mm wide and 20mm high https://youtu.be/iRJW8cWVhIc