Series B is a narrow line design for use with regress acoustical tile. The grid slot will accept a
threaded bolt permitting unlimited fastening and unfastening of partition
headers without defacing grid or acoustical materials. The slot size of
Series B is offered in 5/16" thread, 1/8" thread, and 1/4"
thread. Module size available as required. Intersections
can be cross routed, butt cut or mitered.