The BT-H1200 heavy duty raised base plate is a 30″ x 30″ all aluminum 1.5″ base plate for any job indoors or out.  It is designed to mount most 12″, 290 mm, 20.5″ box truss sizes and also features offset hole patterns for balancing of 12″ box truss when used to hang and support large flat screen monitors in a single column configuration.  Large handle cut outs on both sides make it easier to pick up and move.