The D-3550 Series is STANLEY’S most versatile door closer. The reduced body profile provides ease of installation on a variety of applications. In addition, the automotive grade R-14 silicon alloy construction provides dependable performance under heavy loads associated with high-traffic institutional facilities. The D-3550 closer accommodates a variety of standard and heavy-duty arm applications.
Manufactured with automotive grade silicon aluminum alloy to enable superior performance and wear resistance under extreme hydraulic pressures
Forged construction provides superior performance with an aesthetically-pleasing low profile design
Non-handed impact resistant cover providing aesthetically-pleasing design with dependable cylinder body engagement
Widest range of spring power adjustment to accommodate application needs
Eliminates the need for seasonal adjustment
V-slot valves enable fine tune hydraulic adjustment
Low profile "O" rings reduce leaks from improper field adjustment