Length - Inches: 36.35
Length - Millimeters: 923.29
Watts: 55

Equivalent UV Germicidal Replacement Lamps 05-0554 replaces: Eiko G55T8, General Electric 15875, G55T8/HO, Laguna Hagen Power Clear, Power Max 5000, PT-1660, PT-1661, Osram Sylvania 23388, G55T8, G55T8/OF, Philips Lighting G55T8,Tropical Marine Center (Vecton UV) HF Pro 55, bi-pin The lamp is 55 watts, 895 mm in length, rated effective life 10,000 hrs., change once a year.