passive air intake line length

  • Thread starter biggerbud420
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biggerbud420

biggerbud420

i have a 6 inch ac infinity cloud line 6 inch exhaust fan i am using the old 4 inch duct as passive air intake hose .how long should the intake lines be ?
 
Madmax

Madmax

Not long .from the passive hole id put 1 90 deg bend to stop light going in and a ft or 2 of ducting.Id make it 6 inch passive hole as to not restrict the inline fan drawing air in.
 
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