Sylvania M400/U/ET18 | 400W Metal Halide - Mogul - 4000K - Clear

The Sylvania M400/U/ET18 is a compact metalarc lamp with a reduced outer jacket.

This bulb produces 36,000 initial lumens in the vertical position and 33,000 in the horizontal position.

Vertical rated life is 20,000 hours and horizontal 15,000 hours.