Norton 1601 689 Grade 1 Tri Mount Surface Closer, Pull Side, Regular, 180 Deg. Swing, Adjustable Size 1-6, Aluminum Painted Finish, Non-Handed

The Norton 1601-689 is a heavy-duty, ANSI/BHMA Grade 1 surface-mounted hydraulic door closer designed for commercial aluminum storefront, wood, and hollow metal doors. Featuring adjustable spring sizes 1 through 6, a non-handed cast aluminum body, and 689 aluminum-painted finish, the closer supports regular arm, top jamb, and parallel arm mounting configurations. Its independent sweep speed, latch speed, and backcheck adjustments provide controlled door closing, while its non-hold-open design supports commercial entrances and compatible fire-rated door assemblies. The 1601-689 accommodates doors weighing up to 250 lbs and allows opening angles up to 180 degrees when installation conditions permit.

Norton 1601-689 Grade 1 Adjustable Surface Door Closer, Size 1-6, Aluminum Finish

The Norton 1601-689 Surface Door Closer is a commercial-grade hydraulic door closing device engineered for reliable operation on aluminum storefront doors, commercial entrances, and interior or exterior door assemblies. Manufactured by Norton Rixson, an ASSA ABLOY brand, the 1601 Series combines ANSI/BHMA A156.4 Grade 1 performance with adjustable spring power sizes 1 through 6, allowing installers to select the appropriate closing force for different door widths, weights, and operating conditions. The closer is designed for doors weighing up to 250 pounds (113 kg) and supports interior and exterior applications when installed within the manufacturer's specified limits. Its 689 aluminum-painted finish provides a neutral appearance compatible with aluminum storefront framing and commercial architectural hardware. The standard 1601-689 is furnished as a non-hold-open, non-handed, tri-packed closer, supporting regular arm, top jamb, and parallel arm installations without requiring separate left-hand or right-hand closer bodies. Typical applications include retail storefronts, commercial offices, schools, healthcare facilities, industrial buildings, and institutional entrances requiring controlled, automatic door closing.

The Norton 1601-689 incorporates a heavy-duty, one-piece cast aluminum closer body with a full rack-and-pinion hydraulic mechanism designed for repeated commercial door operation. The closer features a 1-3/8-inch-diameter piston and 5/8-inch-diameter pinion journals, providing the mechanical components required for smooth hydraulic door control. Its adjustable spring mechanism accommodates ANSI sizes 1 through 6, with an internal power adjustment that allows installers to increase or decrease closing force according to door size, operating conditions, and applicable accessibility requirements. Three separate hydraulic adjustment valves provide independent control of sweep speed, latch speed, and backcheck intensity. The sweep valve regulates the primary closing movement, the latch valve adjusts the final closing speed to help achieve positive latch engagement, and the backcheck valve provides hydraulic resistance as the door approaches the wider portion of its opening cycle. The closer incorporates staked adjustment valves to reduce the risk of accidental valve removal and hydraulic fluid leakage. Its standard housing measures approximately 9-3/4 inches long, 2-5/8 inches high, and 2-7/8 inches in projection, with closer body mounting holes spaced 9-1/16 inches horizontally and 3/4 inch vertically.

The Norton 1601-689 features Tri-Style mounting flexibility, allowing the same closer assembly to be installed in three common commercial door configurations. Regular arm mounting positions the closer on the pull side of the door, providing a conventional double-lever arm arrangement for inward-opening applications. Top jamb mounting positions the closer body on the frame above the door, making it suitable for compatible outward-opening doors and installations where the door surface cannot accommodate a conventional closer body. Parallel arm mounting places the closer on the push side of the door with the arm positioned approximately parallel to the door face when closed, reducing exposed hardware projection in corridors and high-traffic areas. The standard tri-packed assembly includes the necessary arm components and parallel arm mounting bracket for these configurations. Depending on mounting position, surrounding construction, and door hardware clearance, the closer supports a maximum opening angle of 180 degrees. Its non-handed construction simplifies installation on right-hand and left-hand doors, while the spring power and hydraulic control valves can be adjusted after mounting to achieve the required closing performance. The manufacturer's installation instructions recommend doors equipped with ball-bearing or anti-friction hinges, properly reinforced mounting surfaces, and a separate mechanical door stop.

The Norton 1601-689 is certified to ANSI/BHMA A156.4 Grade 1 and is UL/cUL Listed for use on compatible fire-rated door assemblies, including applications evaluated under UL 10C positive-pressure fire testing for ratings up to 3 hours. Its adjustable spring power supports applications designed to meet ANSI/BHMA A117.1 and Americans with Disabilities Act (ADA) accessibility requirements, provided the complete door assembly satisfies the applicable opening-force, closing-speed, and latching requirements. For fire-rated doors, the closer must be adjusted to provide sufficient force for reliable closing and positive latching; reduced opening force alone does not establish accessibility or fire-door compliance. Unlike the Norton 1601H hold-open model, the standard 1601-689 does not mechanically hold the door open, making it appropriate for self-closing fire door applications when installed as part of an approved assembly. The Norton 1601SS provides a corrosion-resistant alternative for environments requiring additional protection against exposure, while optional CloserPlus, CloserPlus Spring, Parallel Rigid, Unitrol, and Cushion Stop arm configurations address specialized door control requirements. The standard 1601-689 does not include these specialty arms or an optional decorative cover. Norton Rixson currently specifies a 30-year limited manufacturer warranty for the 1600 Series, supporting long-term commercial door hardware maintenance and replacement applications.