Philips HST-E Super Longlife high pressure sodium lamp SON-PIA PLUS, E40, 400W 2000K 55400lm, dimmable - Philips
HIGH PRESSURE SODIUM HPS SON, Elliptical 400W 2000K GES-E40 Lamp - John Cribb & Sons Ltd, UK Electrical Distributors, Dorset, Hampshire, Wiltshire, Somerset & the Isle of Wight.