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Overhead Concealed Door Closer Invisible Door Control... Dependable and Easy to Install Architects are often challenged to design buildings that are both beautiful and functional, down to the last detail. The DORMA - RTS 88 Overhead Concealed Door Closer offers the perfect solution for those who prefer the aesthetic advantages of a concealed door closer. The RTS 88 is designed to give lasting, dependable service where surface-applied units and other types of closers are not suitable, or would interfere with the architectural design. It can be easily installed in wood, aluminum or hollow metal doors and frames, for single and double-acting doors. Contractors will appreciate the RTS 88 closer because the majority of door and frame preparation is done prior to installation of the unit, resulting in less on-site machining. The RTS 88 is also an excellent replacement closer for problem entrances. The versions are available to meet barrier-free requirements. The DORMA RTS 88: to see the beauty, just open the door. - Double- or single-acting applications The RTS 88 Series overhead concealed door closer has a compact body size which fits into a 1-3/4" header for aluminum frames and is also easily adaptable to wood and hollow metal frame configurations. Openings fitted with the RTS 88 are capable of 90° or 105° maximum opening door swing, trim conditions permitting. Sweep latch closing speeds are controlled by two noncritical temperature compensating valves to insure constant closing speeds even under the most extreme temperature conditions. A built-in pressure relief valve protects the closer from abuse due to forced closing. A positive stop at 90° or 105°, depending on model selected, combined with a mechanical backcheck, hinder the forceful or abusive opening of the door and help protect the door, frame, and adjoining structure. For doors experiencing unusual conditions, e.g. excessive wind pressure or abuse, an auxiliary stop should be installed. For independently hung doors with 8812 slide arm, maximum degree of opening and hold open angle may vary slightly. The RTS 88 is capable of accommodating doors weighing up to a maximum of 250 pounds. The closer can handle exterior doors up to a maximum 3'6" width and interior doors up to a maximum 4' width. A complete line of accessories is available for wood, aluminum, and hollow metal applications, both single- and double-acting center hung doors, and hinged or offset pivoted single-acting doors. Other accessories include cover plates for wood, aluminum, and hollow metal frames; extended spindles to provide increased clearances at the top of the door. Optional hold open units are available, effective at either 90° or 105°. The RTS 88 BFI and RTS 88 BFE will meet barrier-free requirements on 3'0" wide center hung single- or double-acting doors. The RTS 88 BFI meets the 5 lb. maximum opening force requirement for interior barrier-free openings. The RTS 88 BFE meets the 8.5 lb. maximum opening force requirement for exterior barrier-free openings. They are suited for easy retrofit of Jackson, Rixson 608, and similar style closers. The RTS 88 BFI and RTS 88 BFE are available in 105° NHO and 105° HO only. DORMA RTS 88 Series overhead concealed door closer for both single- and double-acting doors. The RTS 88 will consist of a steel cam, rollers and springs housed in a compact cast iron body. Closers will be capable of being installed in minimum 1-3/4" x 4" headers. RTS 88 will have maximum door opening to 90° or 105°, trim conditions permitting. Sweep and latch speed will be controlled by two noncritical adjustment valves from 90° or 105° to closed. Built-in pressure relief valve will protect the closer from abuse caused by forced closing. A mechanical backcheck combined with a positive stop at 90° or 105° will be provided to protect the door and frame. RTS 88 closer will be available with hold open at 90° or 105°, or without hold open. The RTS BFI and BFE are available with 105° hold open only. Optional extended spindle will be available in 3/16" integral length or 1-3/16" add-on length. Accessories will be available for single- and double-acting doors, and independent hung installations for wood, aluminum, and hollow metal doors and frames. Click here to add us to your favorites list! Check out our other items! |