Products VentilatorRound Vent Back Butterfly Vent 956-03703-00 BUTTERFLY VENT STAMPED AISI 304 ITEM NO. Dia mm Weight/g 956-03704-00 100 (4") 73 956-03703-00 125 (5") 67 You May Also Be Interested In Ventilator,SS 556-11314-00 Ventilator 197-00882-00 Top Side, Nylon 556-25840-W Pipe Deck Fill 956-08861-00