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 Butterfly Vent 956-03703-00 Ventilator 197-00882-00 Universal Spring Snaps 256-03773-00 Gate Rail Hinge 156-66056-00