# With regards to Passive Stack Ventilators, are there any Building Regulations related to duct length?

**URL:** <https://reachback.builtintelligence.com/t/with-regards-to-passive-stack-ventilators-are-there-any-building-regulations-related-to-duct-length/2795>\
**Category:** Part F Ventilation\
**Created:** [15 February 2013 13:14 UTC](https://reachback.builtintelligence.com/t/with-regards-to-passive-stack-ventilators-are-there-any-building-regulations-related-to-duct-length/2795 "2013-02-15T13:14:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Build\_Regs\_Advisors](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Build\_Regs\_Advisors](https://reachback.builtintelligence.com/u/Build_Regs_Advisors)\
**Post date:** [15 February 2013 13:14 UTC](https://reachback.builtintelligence.com/t/with-regards-to-passive-stack-ventilators-are-there-any-building-regulations-related-to-duct-length/2795/1 "2013-02-15T13:14:40Z")

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**Author:** ![Build\_Regs\_Advisors](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Build\_Regs\_Advisors](https://reachback.builtintelligence.com/u/Build_Regs_Advisors)\
**Post date:** [15 February 2013 13:14 UTC](https://reachback.builtintelligence.com/t/with-regards-to-passive-stack-ventilators-are-there-any-building-regulations-related-to-duct-length/2795/2 "2013-02-15T13:14:48Z")

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The existing Building Regulations state that the duct length should be at least sufficient to fit between the ceiling grille and the outlet terminal.