von duprin parts extension rods

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 8827 vertical rod device is available for 7 or 8 feet tall door standard. 12", 24", 36" and 48" extension rod kits are available for taller doors (8 feet max on fire rated openings). We do no...
The 9927 installed on a 7'1" door requires a 12" extension rod
The extension rod could be used either on the top or bottom rods.
Up to 8' replace the top rod with part # 4270100018. 
From 8' to 9' use the part # 4270100172 extension rod kit
From 9' to 10' use part # 4270100197 extension rod kit.