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- Estimated life of 2.7 years based on 3 hours use per day
250 Watt, 120 Volt Metal Halide Stage/Studio Lamp with GY9.5 Base
|MSD 250/2 30H
A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
The end (or ends) of the lamp that fits into the socket.
The color of the light produced by a bulb
Color Rendering Index is an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer and more accurately colors generally appear. CRI differences among lamps are not usually visible to the eye unless the difference is more than 3-5 points.
|Initial Lumen Output
Initial Lumen Output
The lumen output at first start-up.
The surface finish of a bulb, which may affect the quality of the light emitted.
The technology implemented by the bulb, e.g. incandescent, halogen, LED
|Average Rated Life (hr)
Average Rated Life (hr)
A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.
|Contains Mercury (Hg)
Contains Mercury (Hg)
Contains some level of the element Mercury. Typically, bulbs containing Mercury display the symbol 'Hg'.
|Not For Sale In
Not For Sale In
This bulb falls within State-defined sales restrictions for the listed States.