Spectronics

 replaces 4 watts, 135 mm in length and has  bi-pins on both ends lamp, American Ultraviolet GML180, Aquanetics ALA-4, Aquanetics 4, Aquanetics Q4IL, Q4SPT, Aqua-Star Portable Water Purifier, EcoQuest Fresh Air, UV4, Eiko G4T5, General Electric 15872, G4T5, Hawaiian Marine AN-4S, AN-4SA, Orbitec 007859, Osram Sylvaina G4T5, Philips Lighting 363713, TUV4T5, Purely UV Products PUVLB504, Spectronics BLE2537/S, Ushio 3000013