The Von Duprin 47258386 is the OEM lift finger kit for the Von Duprin 98/9950WDC and 98/9950WDC-F (fire-rated) exit devices. The 9950WDC is Von Duprin's Wood Door Concealed exit device - a concealed exit device that uses vertical cables inside the wood door stile rather than traditional rods, making it the specified solution for wood door applications where standard CVR (Concealed Vertical Rod) metal door devices can't be installed.

The lift finger is documented in the 9950WDC Installation Instruction (Allegion doc 110814) as the component inside the center slide that "transfers motion from exit device spool inputs." It is the mechanical link between the pushpad depression and the cable actuation that drives the top and bottom latches. When the lift finger wears or fails, pushpad motion no longer correctly transfers to the cable and latch system - the device operates but the latches may not retract, or they retract at the wrong point in the pushpad travel.

What the Lift Finger Does in the 9950WDC Center Slide

The 9950WDC center case contains two distinct screw-based adjustment systems for the top and bottom latch positions: the top lift finger with its associated lift finger screw and locking screw, and the bottom lift finger with its screw and locking screw (for 2-point latch configurations only). Per the installation instruction parts diagram:

Top lift finger screw adjusts the release point of the top latch - the exact position in the pushpad travel at which the cable tension drives the top latch to retract from the top strike.

Top lift finger is the physical transfer component that moves when the pushpad is depressed, carrying the mechanical input from the center case spool to the cable that actuates the top latch.

Top locking screw locks the lift finger screw adjustment in position after calibration to prevent the setting from drifting during service.

The bottom lift finger mirrors this assembly for the bottom latch in 2-point configurations. When the 9950WDC ships and is installed, a specific automatic adjustment procedure is used: loosen the top adjustment locking screw, the lift finger moves (the instruction notes "movement may be small or large" - automatic adjustment occurs), then retighten. This sets the lift finger to the correct calibration for the specific door opening geometry.

Von Duprin 9950WDC: Why Cables Instead of Rods

The 98/99 Series standard CVR device uses steel rods running inside a hollow metal door cavity. Wood doors don't accommodate this system - the door construction doesn't provide the internal clearance or anchoring points for metal rod routing. The 9950WDC substitutes concealed vertical cables for the rods. The cables route through the wood door stile using a routed channel or cutout, connect to the center case spool system at the center of the door, and engage the top strike above and the floor-mounted latch below.

Von Duprin's installation instruction summarizes the advantage: "Simplified sizing, ease of adjustment, and greater door integrity make the Wood Door Concealed exit device a more secure solution, without the complexity associated with traditional concealed systems." Cable adjustments are made by removing the scalp plate from the door edge rather than disassembling the door hardware. The spool screw in the center case sizes the cable tension to the door height and undercut dimension.

Von Duprin Exit Device Parts: Lift Finger Kit Field Replacement

The lift finger kit (47258386) is specified when the existing top or bottom lift finger shows wear at the transfer interface with the spool, when the screw engagement strips, or when the automatic adjustment no longer seats correctly after repeated calibration. The kit is also the correct replacement when converting the device from a 1-point (top latch only, LBL configuration) to a 2-point (top and bottom latch) installation that requires adding the bottom lift finger assembly.

SecurityParts stocks OEM Von Duprin 9950WDC exit device parts.