Parallel Arm Bracket, Finish Unfinished, Color Silver, Includes Stop Arm, Standards ANSI A156.4, Grade 1, BHMA, UL-10C and UBC Positive Pressure Fire Test, UL and cUL Listed to Canadian Safety Standards Listed for Use on Fire Doors, Yes, Exterior Door Width Up to 48 in, Mounting Hardware Included, Projection from Wall 2 1/4 in, Spring Size Adjustable 1 to 6