Sdc 492-GL4 Glass Rod Replacement 4-rod Kit

Product Description

The SDC - SECURITY DOOR CONTROLS 492-GL4 is a four-piece glass rod replacement kit designed for use with the SDC 492 series electromagnetic door holder and release devices. Glass rods are a critical fusing element in these life-safety devices, designed to shatter at a specific temperature threshold so the door holder releases and allows fire doors to close automatically. This kit supplies four replacement rods, providing enough stock to service multiple units or keep spares on hand. Installation is performed by qualified door hardware or life-safety technicians.

This replacement kit is suited for commercial and institutional facilities where SDC 492 series door holders are installed, including schools, hospitals, office buildings, and other occupancies requiring compliant fire door hold-open devices. The glass rods are a consumable maintenance component replaced during routine inspection, after a fire event, or when rods are found damaged during service calls. Having replacement rods on site reduces system downtime during inspections or post-activation servicing.

Key Features

• Four glass rods per kit, providing multi-unit service coverage or on-hand backup supply
• Direct replacement component for SDC 492 series door holder devices
• Critical fusing element that enables automatic fire door release at temperature threshold
• Sold as a single kit unit (each)

Compatibility

Designed as a direct replacement glass rod set for the SDC 492 series electromagnetic door holder and release devices.

Installation Notes

Glass rod replacement on fire door hold-open devices should be performed by a qualified door hardware technician or life-safety systems professional familiar with local fire codes and AHJ requirements. De-energize the door holder before beginning any service work. Handle glass rods carefully to avoid pre-activation breakage during installation. Verify proper rod seating and device function before returning the unit to service.