These optional mounting brackets mount anywhere on the secondary rail system of the underside of your SOLO, DUO, or TRIO Templeboard. They help further tension and stiffen the top surface and can also be used to mount smaller items on the bracket with a Small or Medium Pedal Plate. Installs with a phillips screwdriver. NOTE: The DUO 24, DUO 34, and TRIO 28 come standard with one Mounting Bracket pre-installed. The TRIO 43 comes standard with two.