Dorma 8956DST Door Saver Parallel Cushion Arm Thumb Turn Hold Open Door Closer

• Model 8956DST closer shipped with parallel arm, plastic cover, and components required for mounting configurations.
• Model 8956 closers fully adjustable for use on exceptionally wide, tall, or heavy doors.
• Backcheck valve (standard) provides adjustable-intensity hydraulic cushioning and prevents uncontrolled door opening to protect the door and frame.
• POS Backcheck Positioning valve (standard) maintains effective backcheck range on parallel arm applications.
• Tamper-resistant (hex key) valve adjustment with all valves accessible with closer installed on door (standard).
• Full plastic cover standard.
• Heavy duty, aesthetically pleasing, and easy to adjust steel arm assembly.
• Standard fasteners include separate wood and metal screws.
• SN1 sex nuts for 1-3/4" thick doors included standard.
• 10 million cycles independently certified.
• TIGHT LOCK® arm tightening.
• Forged steel main arm hub.
• Corrosion-resistant, high-strength, aluminum housing.
• Hardened pinion/piston provide toughness and high-strength.
• Non-handed for RH or LH doors.
• Positioning valve (POS) on front, accessible with closer installed.
• Full adjustment using BC, POS (PA mount), Sweep, and Latch valves.
• All valves (including POS) are accessible with closer installed.
• Closing force adjustment assured by octagonal housing bore.
• Closing force adjustment halts at either full-on or full-off — no guessing.
• Accurate installation using full-size templates.
• Cover retained by screws passing through cover holes.
• Finishes: Aluminum 689 and Dark Duranodic 695