T-rail mounting bracket in galvanized steel for LiftMaster, Chamberlain, and Craftsman T-rail openers. This bracket connects the opener rail to the header, ceiling, or rafters. it is got multiple attachment points so you can position it where you need it depending on your framing situation. Galvanized finish holds up well in damp garages. If you are installing a new opener or the old bracket is bent and the rail's sagging, This replacement part is the part. Make sure your opener uses a T-rail and not a square rail or belt rail, because the bracket style is different for each one.