• Designed for stock hollow metal doors and frames with standard weight 4-1/2" hinge preparation
• Interchangeable spindle adapters
• Includes three special steel 4-1/2" ball bearing standard weight hinges with 3/4" offset. Doors over 90" in height warrant an additional hinge
• Surface mounted bottom arm with thru bolts
• 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°
• Doors will swing 5° beyond hold open point
• Available with floor plate (Q) or threshold installation (QT)