Features:

• ANSI/BHMA A156.4 Grade 1.
• Conforms to UL10C and UBC for positive pressure fire test.
• UL Listedand cUL Listed to Canadian Safety Standards listed for use on fire doors.
• 10-year or 10 million cycle warranty .
• Versatile mounting applications permit standard, top jamb, parallel and track installations.
• Adjustable spring power allows 351 closers a size range of 1 through 6. They are adjusted to size 3 before leaving the factory.
• One door closer body for all applications. All 351 are non-handed.
• Meets ADA requirements in all applications except Push Side Track application.
• High impact non-corrosive plastic covers standard, metal optional. Both secured with two machine screws.
• All weather capabilities.
• Captivated brass valves.
• Interchangeable forged steel arms.
• Standard and parallel arms.
• Push and pull track arms (including double egress).
• Heavy duty forged steel arms are finely finished and interchangeable between SARGENT 351, 1431 and 281.
• Series Innovation.

• Heat treated full closed rack and pinion provide control from the full open position.
• Heavy duty one piece die cast aluminum silicon alloy body with 14% silicon provides superior strength and wear resistance.

• Brass body low sensitivity control valves offer separate regulating for door speed, latching, backcheck and optional delayed action.
• All valves are controlled by an 1/8" Allen wrench to discourage tampering and are captivated to prevent removing valves from the body and damaging door closer.
• High impact non corrosive covers are manufactured from strong impact resistant material that is flame retardant (metal covers optional). All covers secured by machine screws.
• Adjustable backcheck (standard) protects the door and hardware from damage during the opening cycle .
• Adjustable delayed action (optional) permits easy access for physically impaired individuals.