Philips TL-E Circular Super 80 32W 840 MASTER- BudgetLight
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
32 W Circular Tube (OptoMag Accessories) -Khush Enterprises
Crompton - 32W Circular Fluorescent | Fluorescent Tubes at Snape & Sons