Our Flow Pattern Modular UPVC kits are designed to be cut down and installed onsite by a qualified installer. They are supplied with everything in the kit that you require to make up a grate and channel to a maximum length of 1250mm. The overall width is 100mm and the overall depth is 25mm. The kit comes complete with a base channel, flow pattern stainless steel grate (316-grade s/s), base channel end caps, 43mm, 70mm and 83mm outlets with hole saws to suit and silicon to complete the job.