Patodia Glass Industries Ltd. Supplies Festoon Bulb. Patodia Glass Industries Ltd. Is an ISO 9002 certified company. Festoon Bulb is used as Flasher Number Plate and Roof bulb. Festoon Bulb is available in 8.5 to 10.5 diameter with gas filled Base S V 8.5 X 9.5 and BASE S V 7 X 7.5.