The Ushio BTL is a 500-watt, 120-volt single-ended halogen quartz globe in a T6, clear envelope. It burns at 3050K, has a P28S base and is rated for 500 hours.
- Brand: Ushio
- ANSI code: BTL
- Wattage: 500W
- Voltage: 120V
- Color temperature: 3050K
- Rated life: 500 hours
- Base: P28S
- Bulb: T6, clear
- Type: Halogen, single-ended quartz
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