• Concealed arm is designed to eliminate visible adjusting screws on face of door
• Arm bolt locks arm to closer spindle – adjustment made through heel of door
• Interchangeable spindle adapters
• Separate and independent valves for closing speed, latch speed and backcheck
• Available non-hold open (NBC) or automatic hold open (ABC) specify 90° or 105°
• Standard top pivot #340 included
• Not allowed for fire rated doors