Wind-Driven Turbine Exhaust Ventilator: 19 in Head Dia, 12 in Throat Dia, 631 cfm @ 4 mph, Steel SIZE TYPE Gallon Bottle

SIZE TYPE       Gallon Bottle

For use with Bobrick® models B-4063

Hand applied individual anitque brass nail head trim

Comes with all game pieces

self-closing hinges

Wind-Driven Turbine Exhaust Ventilator: 19 in Head Dia, 12 in Throat Dia, 631 cfm @ 4 mph, Steel SIZE TYPE Gallon BottleWind Driven Turbine Exhaust Ventilator: 19 in Head Dia, 12 in Throat Dia, 631 cfm @ 4 mph, Steel Wind driven turbine fans help ventilate structures without using electricity. As the wind blows, it turns the turbine and creates negative pressure. This low pressure draws hot air out of the structure and pulls in fresh air through openings in the structure. Brand EMPIRE Throat Diameter 12 in Overall Height 17 in Overall Width19 in Airflow @ 4 mph631 cfm