Two adjustable models position center of short throw projector mount to a maximum of 30" from the wall. Crimson JS1-30S is ideal for projectors weighing up to 50 lb. It offers quick and secure hook in place arm attachment with +/-5deg. height/pitch adjustment at the wall plate. It has internal cord management for easy wiring and a clean look. Compatible with all projector mounts with 1.5 NPT threaded interface.