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|Manufacturer||Von Duprin Exit Devices|
The Von Duprin 88 Tube Attaching Ring 090021 is also used on the Von Duprin 55. The ring fits over the device lever arm, and is expanded by the Wedge (88R90) and the Wedge Tite Screw (88R100). When the Wedge Tite Screw is tightened the Ring expands and keeps the crossbar parallel to the door. Measures 15/16" long by 13/16" diameter.
Von Duprin Part #090021
Old Part # 965676