| Bulb Type | Gas Discharged |
| Lampholder Type | E40 |
| Watts | 400W |
| Dimmable | Not Dimmable |
| Product Life (Hours) | 16000 |
| Color Temperature (K) | 5500K White |
| Luminous Flux (Lm) | 34000 Lm |
Osram Metal Halide Bulb Hqi-Bt 400W/D 4008321525970 - 4008321677860 These are compact discharge, high efficiency, double and single socket bulbs with constant color and bright light throughout the life of the bulb. Compact, very high efficiency, long service life ceramic metal Halide discharge reflector produces sharp white glowing light with high color rendering. Areas of use, industrial factories, workshops, gymnasiums, buildings, bridges are only approved for use in closed luminaires.
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