The Osram GLC bulb is a halogen light bulb with a G9.5 medium bi-pin base. The GLC is a 575 watt and 115 volt lamp. This light bulb is a tungsten halogen bulb with stage and studio applications. The GLC is commonly used in theatrical fixtures including Altman Shakespeare, Altman Star PAR and Elation Opti-Par ETL.

The GLC and the GLA lamps were created to allow older ellipsodial fixtures to match the wattage of a HPL lamp. When this lamp was first introduced, it was referred to as the HX-602 lamp before it became known as the GLC. The GLC is the same wattage as the GLA. The GLC has a higher color temperature and higher lumens in exchange for the fewer life hours, compared to the GLA.

• ANSI Code: GLC
• Common Name: 575/115/300
• Watts: 575 W
• Volts: 115 V
• Base Type: G9.5 Medium Bi-Pin / Medium 2-Pin
• Bulb Shape: T6 tubular
• Diameter: 0.625 in. (15.875 mm)
• Maximum Overall Length (MOL): 3.98 in. (101.09 mm)
• Light Center Length: in. 2.325 in. (59.05 mm)
• Filament: C-13D
• Finish: Clear
• Lumens: 15500 lm
• Color Temp: 3250 K
• Color Rendering Index: 100
• Average Life: 300 hrs
• Dimmble: Yes
• Operating Position: Universal/Any
• Other References: GE 88423 Q575T6/5CL, Philip 28739-1 - 6989P, Thorn, Ushio 1000665 - JCS115V-600WCM HP600
• Related Lamps: GLA 575 watt