The Detex 104358-3 is the OEM fillerplate subassembly for the EBxW 3-foot configuration of the Detex Value Series exit alarm exit device family. It is the structural core of the exit alarm device, the surface-mounted body extrusion that forms the base plate of the entire assembly, provides the mounting positions for the alarm electronics, houses the pushpad attachment interface, and carries the fastener holes for door installation. This is a complete subassembly, not a bare plate. The fillerplate ships pre-assembled with its associated mounting components as a field replacement unit for the EBxW 3-foot device body.

The 3-foot designation corresponds to the device length for door opening widths of approximately 2'4" to 3'. The companion fillerplate for 4-foot devices (door widths 2'10" to 4') is part number 104358-4. Confirm the installed device length before ordering.

Detex EBxW Exit Alarm: What the Fillerplate Subassembly Is

The Detex Value Series uses a fillerplate-based architecture. The fillerplate is the first component that goes on the door it mounts directly to the door face using either 1/4-20 machine screws into drilled holes (drill #7) or sex nuts into 3/8" holes, depending on the door type. All other device components pushpad wrap, alarm electronics, battery endcap, LED indicators, and mortise cylinder assemble onto and around the fillerplate after it is secured to the door. The fillerplate is therefore the foundation of the entire device installation.

When the fillerplate is damaged by impact from carts, forced entry attempts, moisture intrusion that compromises the electronics mounting positions, or structural damage to the extrusion body the 104358-3 subassembly is the correct replacement part. Because the fillerplate carries the electronics mounting and all structural attachment points, replacing this subassembly restores full device function without ordering a complete exit alarm unit.

Detex Fillerplate Subassembly: EBxW vs Standard EB Difference

The EBxW designation identifies a specific variant in the Value Series product family. The EB is the standard exit alarm body. The EBxW is the wide pushpad version; the pushpad spans the full width of the door stile rather than the shorter standard bar. The "W" suffix always means wide bar in the Detex Value Series catalog.

One critical wiring distinction confirmed in Detex instruction document 104947: the EBxW does NOT have the black wires for the 12/24V AC/DC hardwired connection that the standard EB includes. The EBxW is a battery-only alarm device for its alarm function. If the installation requires a hardwired power input, the correct device is the standard EB with the AC/DC connection, not the EBxW. This distinction is not visible from the exterior of the device; it must be confirmed against the installed model before ordering the fillerplate subassembly.

Detex Alarm Parts: Value Series EB EA EX EBxW Fillerplate Family

The fillerplate subassembly family in the Value Series EB/EA/EX/EBxW catalog covers four base device types. The EB is the standard exit alarm body with battery power and optional 12/24V AC/DC connection. The EA is the exit alarm with expanded feature support. The EX is the exit-only configuration with no alarm, hardware exit function only. The EBxW is the wide pushpad exit alarm (this product's device type).

All four device types are available in 3-foot and 4-foot lengths, producing eight fillerplate subassembly part numbers total across the family. The Value Series alarm operation is identical across the EB/EA/EBxW base types: the mortise cylinder arms counterclockwise (CCW, key removable after rotating back to horizontal home position) and disarms clockwise (CW). The unit ships with Auto Rearm set to OFF and Status Indicator set to OFF. Red LED indicates armed status; green indicates disarmed. The siren activates when the pushpad is depressed and sounds for approximately 2 minutes after the bar is released.