Atlantic UV 05-1370-R GPH436T5L/4 - 21W - 4-Pin - 436mm Bulb Code_G36T5/4P-SBL Cold Cathode germicidal lamps are

Cold Cathode germicidal lamps are instant starting and utilize a large cylindrical cathode instead of a tungsten filament

It has a part number of 05-0825

It has a part number of 05-1042

It has a part number of 05-0278-R

It has a part number of 05-0716-V

Atlantic UV 05-1370-R GPH436T5L/4 - 21W - 4-Pin - 436mm Bulb Code_G36T5/4P-SBL Cold Cathode germicidal lamps areThis product is an Atlantic Ultraviolet Preheat Ultraviolet Lamp. It has a part number of 05 1370 R. Preheat germicidal lamps are operated by a preheat start circuit that employs a relatively compact and economical ballast. The preheat circuit requires four electrical connections per lamp and a slight to moderate delay is needed to start the lamp. Some modern electronic ballasts are capable of instant starting a Preheat lamp.