Wall Mounted Units (3:1 models, 4:1 models):

Secure from sliding along the shaft with set screws and shaft collars as applicable (use shaft keys where needed.).Sprocket mounted to Rolling Door on JR-RD or sprocket on JR-ST need to align with the small 9 tooth sprocket.

Shaft Mounted units (1:1, JR-ST, JR-RD, JRG): Includes 26' of hand chain, 1 chain keeper, 2 shaft collars and a 1/4' key