BT37 Light Bulbs | McMaster-Carr

Filter by

Bulb Base Type

Bulb Shape

Wattage

Screw-In Base Size

Voltage

Manufacturer Equivalent Model Number

Bulb Shape Number

Color

Light Technology

Ballast ANSI Number

Bulb Base Number

Metal Halide Enclosure Rating

Enclosed Fixture

Open Fixture

Manufacturer Equivalent

Light Appearance

Operating Position

Maximum Temperature

Brightness

30,000 lm to 99,999 lm

100,000 lm or greater

Ballast Start Type

Ballast Type

Base Diameter

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Color Rendering Index

Forward

How can we improve?

6 Products

About Brightness and Light Appearance

Find the right lumen level to brighten your space. Then, compare the way warm, neutral, and cool lighting affect the appearance of everyday objects.

Metal Halide Light Bulbs

Blown Tubular

Replace the metal-halide light bulbs in your fixture.

Bulbs for open fixtures have a strong outer shell to keep them from shattering if they fail.

Bulbs with an EX39 base can also be used in E39 sockets.

Pulse-start bulbs restart nearly twice as fast as probe-start bulbs.

Bulbs that cannot be sold to Canada exceed local regulatory limits on mercury content.

For Enclosed Fixtures
Wattage	Light Appearance	Brightness, lumens	Bulb Shape No.	Operating Position	CRI	For Ballast ANSI No.	Start Type	Bulb Material	Color	Rated Life, hrs.	Bulb Dia.	O'all Lg.	Cannot Be Sold To		Each
Blown Tubular Bulb—E39 Mogul Base (1 9/16" Dia.)
750W	Neutral (4,000K)	78,000	BT37	Base Up	65	M149	Pulse	Glass	Clear	20,000	4 5/8"	11 1/2"	Canada	1970K17	000000
1,000W	Neutral (3,800K)	110,000	BT37	Base Up, Base Down, Horizontal	65	M141	Pulse	Glass	Clear	15,000	4 5/8"	11 1/2"	Canada	1970K18	00000
1,000W	Neutral (4,200K)	110,000	BT37	Base Up, Base Down, Horizontal	65	M47	Probe	Glass	Clear	15,000	4 5/8"	11 1/2"	Canada	1970K58	00000
For Open Fixtures, Enclosed Fixtures
Blown Tubular Bulb—EX39 Mogul Base (1 9/16" Dia.)
400W	Neutral (3,400K)	38,500	BT37	Base Up	70	M59	Probe	Glass	Frosted	20,000	4 5/8"	11 1/2"	Canada	8352K37	00000
400W	Neutral (3,600K)	40,000	BT37	Base Up	65	M59	Probe	Glass	Clear	20,000	4 5/8"	11 1/2"	Canada	8352K36	00000
1,000W	Neutral (4,200K)	110,000	BT37	Base Up	60	M47	Probe	Glass	Clear	12,000	4 5/8"	11 1/2"	__	1970K75	00000