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Clear BT37 metal halide bulb with E39 mogul screw base

SYLVANIA

SYLVANIA 64490 M400/U 400W BT37 E39 4000K Metal Halide Bulb

SKU CH-MCR6-A93DN

400 watt metal halide bulb with BT37 shape, E39 base and 4000K colour temperature

  • 400 W output for large-area lighting
  • 4000 K neutral white for natural colour rendering
  • Universal burn position suits any fixture orientation
  • E39 mogul screw base fits standard industrial sockets

Sylvania 64490 400W Metal Halide Lamp

The Sylvania 64490 is a 400 watt metal halide bulb built for general lighting. It uses a BT37 envelope and a mogul screw E39 base, delivering a 4000K clear output in a universal burn position. New condition ensures full rated performance from first ignition.

Ideal for high-bay and outdoor fixtures needing

Buyers who need a different wattage, a different colour temperature, or a medium base socket should look elsewhere. Fixtures without the correct E39 mogul screw socket cannot accept this lamp.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 65% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameSylvania

Questions about this item

What socket does the E39 base on this 64490 bulb require?

The bulb uses a mogul screw (E39) base that fits a matching E39 socket rated for 400 W metal-halide operation.

Can I run this 400 W metal-halide lamp on an older probe-start ballast?

The 64490 is a universal-burn metal-halide lamp; verify that your existing ballast is rated for 400 W pulse-start or probe-start MH before installing.

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