Roof Spring

MODEL 690 USAF

• Completely concealed in the aluminum transom bar in dimensions as small as 44mm x 102mm.
• Total hydraulic control with maximum opening angle 90°, 105° or 130° in each direction.
• Adjustment valves of swinging speed and latching speed are fully independent which will save time of adjustment.
• Securely designed speed adjustment valves protect closer from rough use or adverse weather conditions.
• The speed adjustment valves cannot be backed out of Closer when adjustment. The design eliminates oil leakage from the valves.