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Sylvania 64445 MS400/HOR - 400W - BT37 - Position Oriented Mogul Base - Standard Start Metal Halide - 6ct

Sylvania 64445 MS400/HOR - 400W - BT37 - Position Oriented Mogul Base - Standard Start Metal Halide - 6ct

  • $134.95
  • Free Shipping Over $90*

($22.49 Each - Sold in Case of 6)

Contact Us for Lead Time.

This product is a Sylvania 64445 MS400/HOR Super MetalArc standard start metal halide bulb. It is a 400 watt lamp with a BT37 bulb shape and a Position Oriented Mogul base.

Sylvania Super MetalArc lamps provide a higher light output than comparable standard metal halide lamps. The SUPER METALARC metal halide lamps are designed for use where an increased light output and a longer life is required.

Available in 250, 400, and 1000 watts, in both clear and phosphor coated outer jackets, Super MetalArc lamps are ideal for numerous applications. All wattages except the 1000 watt products are offered with a warm 3200K phosphor for use in retail applications.

Super MetalArc lamps are optimized for horizontal, base-up or base-down operation. The uniquely designed arc tube results in a peak performance and a substantial increase in initial and mean lumens.


  • Improved arc tube design
  • Increased light output
  • Long average rated life
  • Energy efficient
  • Color stability
  • Lead-free welded bases


  • Atriums
  • Flood lighting
  • Industrial, commercial and retail
  • Lobbies
  • Parking lots
  • Security lighting
  • Shopping malls

About Sylvania

One of the most well-known names in the lighting world, Sylvania has been a leader in lighting innovation for more than a century. The company's products are designed to save energy, improve the quality of light in any space, and meet sustainability goals throughout the world. Sylvania has been a leader in both traditional and LED lighting products, from bulbs to luminaires.

ANSI CodeM59/E
BasePosition Oriented Mogul
Bulb ShapeBT37
Burn PositionHorizontal
Color Temperature4200
Diameter (in)4.625
Lamp TypeMetal Halide
Max Overall Length (in)11.5
Rated Life Hours20000

ProLampSales Order Code6232025989320
SeriesSuper MetalArc


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Certain general service lighting products are no longer allowed to be sold in California. We make every attempt to inform you before purchase which items are unable to ship to California. If we discover an item you purchased can not be shipped, we may cancel your order. We apologize for any inconvenience this causes. Please contact your state representative for more information.

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Returns are sometimes necessary. Our policy is to provide you with a hassle-free return experience.

Accepted Returns

Items Damaged in Shipping

If the product was damaged during shipping, first keep all packing materials, then call or email us to report the damage. Damage must be reported with 3 days of you receiving the shipment. We will have you return the product using the Returned Material Authorization (RMA) we will provide. We will send you a new product or provide a full refund and we will reimburse you for any shipping charges you may incur.

Missing Items

If all the items you ordered are not in the shipment, call us within 3 days of receiving the shipment so we can promptly send the missing item(s).

Wrong Product Ordered

If you ordered the wrong product, call or email us so we can help you get the correct product. If the product purchase error was in no way the fault of information provided on, you are responsible for the return shipping cost and a 25% re-stocking fee.

Returns After 30 Days

Items ordered from ProLampSales can be returned within 30 days of receipt of the shipment in most cases. Please check that all of your items are present and in working condition within this timeframe.

After 30 days, if the product does not perform to specifications or fails within stated warranty periods, see manufacturer warranty information for procedures to follow.

Products that Differ from Our General Return Policy

International Orders

International orders are non-returnable.

Larson Electronics

Larson Electronics UVC lighting products of any kind are non-returnable. If you need help with a product, please contact us before ordering or verify that you are ordering the correct item.


Non-Quick Ship Soraa brand products are non-returnable. If an error was made in order fulfillment or shipping, replacements may be sent out or a refund issued.

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