High Security LCN closers feature a vandal resistant design engineered for each application, easy installation, and superior performance. Surface mounted options with heavy gauge metal security covers or concealed heavy-duty closers provide flexible application with optimal strength. 

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4210 / 4510 Smoothee® Series Closers

The heavy duty 4210/4510 Smoothee Series Closers meet ANSI/BHMA A156.4 Grade 1 standards, American Disabilities Act (ADA) requirements, and are UL and cUL listed for self-closing doors without with regular or fusible link arms for self-closing doors. The closers also boast a 30-year limited warranty.

A choice of finishes and cylinder functions meet correctional and vandal-resistant requirements. Materials include a high-strength cast iron cylinder, a one-piece forged steel piston, a double-heat-treated pinion, all-weather fluid, tamper-resistant regulating screws and a high-efficiency, full-complement, low-friction bearing. 

Concealed Heavy Duty Closers

The 2210 Series meets ANSI/BHMA A156.4 Grade 1, meets the American Disabilities Act (ADA) reduced opening force requirements and is UL and cUL listed for self-closing doors, Grade 1. It is backed by a 15-year limited warranty.

The high-strength cast iron cylinder mounts in the head frame. Materials include a one-piece forged steel piston; double-heat-treated pinion; high-efficiency, full-complement low-friction bearings; tamper-resistant regulating screws; and all-weather fluid.

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Did You Know?

Double heat-treated pinions are used in LCN door closers to provide extra strength and reduce fatigue so that the hardware can deliver consistent performance and withstand high-abuse applications.

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As part of Allegion’s family of pioneering brands, LCN benefits from the strength, efficiencies, resources, and integration from a global power. In turn, we pass those advantages on to you.

Allegion helps keep people safe and secure where they live, work and visit. With more than 30 brands sold worldwide, we specialize in security around the doorway and beyond. It’s the power of one.