Connecting aluminum extrusions together is important, and so is having a lot of options to accomplish this! These stainless steel brackets / side plates are designed with 2040 Aluminum extrusion in mind but will also work with 2020 and other 20 series extrusions. The plate is designed for situations where two parallel beams need to held together or for strengthening other types of connections. The plate is constructed with 3mm stainless steel and measures 80 x 38mm. The included drop-in T nuts mean these plates can be added after the structure has already been assembled, no need to have access to the slot ends.