45B and 45BE Threaded Hub

The 45B is for adapting a plumbizer to a mast arm pole by using an 1 1/2 “ nipple threaded into the pole. It make for a very clean look on the mast arm pole without the use of pipes holding signals. When using the 52CA cluster adapter the 45BE Extended must be used to allow enough clearance for rotational adjustment. The 45BE Extended uses a 3” nipple for the extra clearance.