Products VentilatorRound Vent Back Butterfly Vent 956-03705-00 BUTTERFLY VENT STAMPED AISI 304 ITEM NO. Dia mm Weight/g 956-03705-00 100 (4") 69 956-03706-00 125 (5") 100 You May Also Be Interested In Ventilator 256-03710-00 Ventilator 197-00881-00 Round Ring 956-04113-00 Brass Hose Mender 256-07041-00