Norton 7900 RH 690 Concealed Overhead Door Closer

Norton 7900 RH 690 Overhead Concealed Closer offers an elegant and functional solution for controlling door movement in high-profile commercial settings. Designed to be installed within a 4-inch frame header, this overhead concealed closer ensures that only the robust one-piece arm is visible when the door is open, enhancing both aesthetics and security. This closer accommodates a wide range of door sizes, adjustable from sizes 1 to 6, and features a non-hold open mechanism, making it suitable for various applications including office buildings and conference centers. The hydraulic system employs non-gumming, non-freezing fluid, ensuring reliable operation in diverse environments. Additionally, the closer includes four to five noncritical valves that allow for independent regulation of sweep speed, latch speed, and backcheck cushioning. With a built-in cushioning shock absorber mechanism and the ability to adjust the degree of stop, the Norton 7900 provides a customizable closing experience. It also conforms to Accessibility Code specifications, making it a practical choice for spaces that prioritize both functionality and compliance. Available in a sleek dark bronze finish (690/US20), the Norton 7900 is not only an efficient choice for door control but also a stylish addition to any commercial space.

Overhead Concealed Closer

Overhead Concedaled Closer, Non-Hold Open, Size 1-6, RH, Dark Bronze

Overhead concealed closers provide an aesthetically appealing way to close a door. In situations where a closer is needed but concealment in the frame header is required or desired, the Norton 7900 closer is the ideal solution for door control. Once installed, only the solid one-piece arm is visible when the door is open; therefore, this unit provides a high degree of vandal resistance. When the door is closed, the closer, arm and slide track are fully concealed. For applications where concealment is required and security is the main concern, the 7970 should be used. The 7900 overhead closers are best suited for high-profile applications such as office buildings or conference centers. The 7970 security closers offer the necessary concealment and tamper resistance required in detention and psychiatric facilities. Used in conjunction with the door position switch (DPS) they provide the ability to monitor door status remotely.

The Norton® 7900 closer is the ideal solution for door control.

The 7900 overhead closers are best suited for high-profile applications such as office buildings or conference centers. The 7970 security closers offer the necessary concealment and tamper resistance required in detention and psychiatric facilities. Used in conjunction with the door position switch (DPS) they provide the ability to monitor door status remotely.

• Closers for exterior (and) interior doors shall be full rack and pinion type with cast aluminum alloy shell.
• Closers shall be concealed in a 4" (102 mm) high frame header.
• The slide track shall be concealed in the top rail of the door.
• Hydraulic fluid shall be non-gumming and non-freezing.
• (Closer shall be provided with a fireblocking door liner to permit installation in 20-minute wood fire door assemblies.)
• Closer shall have (four) (five) noncritical valves, hex-key operated, to independently regulate sweep speed, latch speed, backcheck cushioning (and backcheck positioning) (and delayed action closing).
• [Closers shall be sized units (4, 5 or 6)].
• [Closers shall have power adjustment to permit a 50% increase in power over the minimum closing force for any size.]
• [Closers shall have multi-sized adjustment for (interior doors)(exterior doors)].
• Closer shall conform to Accessibility Code specifications.
• Degree of stop shall be field adjustable.
• Slide track shall have a built-in cushioning shock absorber mechanism.
• (Hold open mechanism shall be capable of release when holding function is not required. Hold open mechanism shall have an adjustable range 85°-110° of door opening and shall release with a manual pressure on the edge of the door in the direction of closer).
• Closer to be Norton® [Series 7900] [Series 7970] (with Norton® #790 Fire Block).
• 7970/7970DPS shall be supplied with Torx® lobular drive fasteners having a center security pin.

Resources

• 790 Fire Bloc for 7900/7970, NHO only
• 7900 Overhead Concealed Closer
• 7900-B, 7900-CP, 7900-OP, Non-Hold Open
• LCN Closers & Auto Operators Installation Guide
• Overhead Concealed Closer Cross-Reference Sheet