When the pitched roof is utilized, the vent cap is removed and air exiting the stub venting tube exits through the vent throughbores in {HEAD ~ the pair} of {TAIL ~ gable ends} of the pitched roof and out into the ambient 
of
When the pitched roof is utilized , the vent cap is removed and air exiting the stub venting tube exits through the vent throughbores in { HEAD ~ the pair } of { TAIL ~ gable ends } of the pitched roof and out into the ambient
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH