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The VON DUPRIN 051808 is an adjustable extension rod kit designed for use with Von Duprin 33/3547 and 33/3548 series exit devices installed in doors ranging from 8 feet 4 inches to 10 feet in height. Extension rod kits allow the push bar or touch bar actuator on a vertical rod exit device to engage the top or bottom latching point across an extended door height. This kit ships as a single assembly and is sized to bridge the gap where standard-length rods fall short on taller commercial door applications. Installation is handled by licensed door hardware technicians or security hardware professionals working on commercial egress systems.
This extension rod kit is suited for commercial and institutional facilities where tall door frames require non-standard vertical rod travel. Typical applications include warehouses, gymnasiums, auditoriums, and other large-occupancy buildings where door heights exceed standard residential and light-commercial sizing. The 051808 is specifically called out for compatibility with Von Duprin 33/3547 and 33/3548 exit device models and is sold as a single unit.
Designed for use with Von Duprin 33/3547 and 33/3548 series exit devices installed in doors with heights from 8 feet 4 inches to 10 feet.
Installation should be performed by a qualified door hardware technician or access control professional familiar with vertical rod exit device systems. Disengage all connected hardware and confirm the door is secured in the open position before removing or adjusting rod assemblies. Follow applicable building and life safety codes, including IBC egress requirements, when servicing exit devices in occupied commercial facilities. Do not modify rod length beyond the specified adjustment range.
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