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    Wattage
    Wattage
    100W
    150W
    250W
    500W
    Overall Length
    Overall Length
    2 7/8"
    3"
    3 5/32"
    3 3/4"
    Bulb Shape Number
    Bulb Shape Number
    T4
    T4 1/2
    Bulb Trade Number
    Bulb Trade Number
    100Q/CL
    ESN
    500Q/CL
    EVR
    150Q/CL
    ETG
    250Q/CL/MC
    Rated Life @ 3 Hours per Day
    Rated Life @ 3 Hours per Day
    0.9 yrs.
    1.8 yrs.
    Rated Life
    Rated Life
    1,000 hrs.
    2,000 hrs.
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
    click to learn more about
    Estimated Yearly Energy Cost
    Estimated Yearly Energy Cost
    $12.10
    $60.30
    $18.10
    $30.20
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    Color Temperature
    Color Temperature
    2,700K
    2,900K
    2,950K
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
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    4 Products