400 Watt - BT37 - Metal Halide - Unprotected Arc Tube - 4000K - ANSI M59/S - Universal Burn - M400/U - Sylvania 64490 BT37 Metal Halide
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SYLVANIA 64490 - 400 Watt - BT37

METALARC - Metal Halide - Unprotected Arc Tube - 4000K - ANSI M59/S - Universal Burn - M400/U

High performance SYLVANIA METALARCmetal halide lamps are among the most energy efficient sources of white light available today for many interior and exterior applications. Please note that metal halide lamps cannot be operated without a ballast. Suitable for open luminaires only if operated vertically +/- 15 degrees, provided the installation is not near people or flammable or combustible material; otherwise, this lamp must be operated in a suitably enclosed luminaire. (Additional information available upon request.)


  • Lead-free welded base and lead-free glass
  • Durable mount structure and lamp construction
  • Available in clear and coated
  • Good CRI
  • Specifications

    Stock Code:  MH-04001SYL
    Family:  Metalarc
    UPC:  046135644900
    ANSI Code:  M59/S
    Base Type:  Mogul (E39)
    CRI:  65
    Diameter:  4.6 in.
    Fixture Type:  Open or Enclosed (Restricted Position)
    Lumens (Initial):  36000
    Case Quantity:  6
    Brand:  SYLVANIA
    Part No.:  64490
    Wattage:  400 Watt
    Bulb Shape:  BT37
    Color Temperature:  4000 Kelvin
    Length:  11.5 in.
    Protected:  No
    Life Hours:  20,000
    Burn Position:  Universal

    Customer Reviews

    Rated 5 out of 5 by 11 reviewers.
    Rated 5 out of 5 by great price, great bulb The sylvania 400 watt metal halide gives the truest natural light color of any metal halide i've tried .At this price you can afford to replace often and keep your lumen output high.Terrific results.Highly recommmended May 10, 2012
    Rated 5 out of 5 by This product is just as advertised! This product is outstanding compared to its cost! Identical to what I needed to replace. Thanks for being in this businedd! March 19, 2012
    Rated 5 out of 5 by Great Lamps I'm very satified with the lamps and the price. Overall a great value. February 15, 2012
    Rated 5 out of 5 by Great product at a great price. We are a sign company that also maintains billboard lighting and parking lot lamps and we define value by product quality and cost and have found the Sylvania 64490 - BT37 - METALARC bulb from 1000 Bulbs.com to be our best value in replacement lamps. The quality of this product makes it a profitable addition to our business and a very good value for our customers. Paul W. Creative Impressions. October 31, 2011
    Rated 5 out of 5 by Great item. These bulbs are much brighter than the ones being replaced with the same wattage. October 29, 2011
    Rated 5 out of 5 by This product has met our expectaions (plus) These bulbs give out a very bright benificial light to help our production maintain quality production. These bulbs come along at a attractive price and quick delivery. October 6, 2011
    Rated 5 out of 5 by These are an excellent buy Great customer service and products are always as described October 5, 2011
    Rated 5 out of 5 by all is great works great fast shipping good deal July 1, 2011
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