Roof Ventilation With Turbine Vents Theyre The Best
A small turbine lots of air a small 12inch diameter turbine vent with a constant wind speed of 5 miles per hour mph can remove 347 cubic feet of air per minute cfm from the attic space a single 14inch diameter turbine vent that is subjected to 15 mph winds can expel up to 1342 cfm of air if the winds are still the vents still allow