Slimline high output (HO) fluorescent T5 tube light bulb. Ideal for use in offices with high ceilings and for applications where a high luminous flux is required. For use with electronic control gear only. N.B. Listed as a 1149mm tube but is actually 1163mm INCLUDING the pins.Fitted with standard G5 2-pin (5mm apart) caps to both ends. This T5 Tube is a newer product from Crompton Lamps and supercedes their old T5 Tube part codes: Light Bulbs (Tubes).Need more help in choosing a suitable fluorescent tube? Read our guide Choosing Flourescent Tubes and our guide to Flourescent Starters.