Style: Vaulted Ceiling Adapter - White QG-PRO-PM-VCA-W vaulted ceiling Adapter can be installed on Cathedral or vaulted ceilings. It is adjustable 45 degree and is compatible with all 1. 5" npt threaded pipes weighing up to 300Lb. This Adapter works with qg-pro-pm-50-b or qg-pro-pm-50-w projector mount.