Truss Mount Adapter for Ceiling Mounts
A truss-mount adapter for open-ceiling projector or fixed-TV installs, fitting round, square, rectangular, or I-beam supports up to 2.4" wide by 3-1/2" high via an adjustable adaptor plate. 1.5" NPS threading (11.5 threads/inch) gives a universal fit, and locking set screws hold the pipe's rotation once set.