H44GS-100MDSKSP-Medium 100W Mercury Spot R
H44GS-100MDSKSP 100W Mercury Spot R

Discontinued - No Remaining Stock - No Recommended Replacement

This lamp has a 26mm Medium Screw Base.
Click here if you need the 29mm Ad-Medium screw base lamp.

Lamps ordered will generally be shipped the next business day by USPS Priority Mail or UPS, check here for Shipping Information. Large orders may qualify for a discount and may not qualify for next day shipment. If you do not know what lamp you require or for lamps not listed, email your request or call 336-882-2854. To order, please use our secure shopping cart or call 336-882-2852 or 800-692-3051. Click to go to our Home Page and View Cart.

Wattage: 100W, 100 Watt, Watts
Ballast: H44
Voltage: Not a Line Voltage Lamp, Ballast Required
Base: E26 Medium, Skirted
Beam Spread: 8° Spot
Glass: PAR38, 4.75" Diameter
Color Temperature: 5900°K
Average Rated Life: 16,000 Hours
Lumens: Initial First 100 Hours 2500, Mean 1950
CRI: 20
Maximum Overall Length: 5.45"
Special Features: Blacklight, Black Light

The following graph is not a specification and was measured from a randomly selected sample October, 2009.
For more details go here.

H44GS100 100W UV Wavelength Graph

H44 Lumen Maintenance Curve

Alternate Part Numbers: 100W Mercury Spot R, H44-100/MDSK, H44-100/MD/SK, 26866-4, Black, HR100FL44, H44, BLE100S, H44JM-100/MDSKSP, NAED, 6235 Projector Spot, Formerly H44-4GS, 0-46135-68846-1, 580-507320, BLE-100S/M, 6-72052-08787-4, 672052087874, H44JM-100/MDSK, Spectroline 100S/M, 64486, 68846, 64486-1, 68846-0, 68846-O

Blak-Ray® High Intensity UV Lamps

UVP P/N 34-0054-01, Type : 100W Longwave, For All B-100 Externally Ballasted Lamps


ZB-100F Blacklight 115V



Cross reference information is designed to help you find the correct lamp for your application. We do not verify the accuracy of this information. You are responsible for ordering the correct lamp and we make every attempt to help you in that process. We recommend that you confirm the information with the equipment manufacturer before ordering.

800 Burton Avenue, Suite 107
High Point, NC 27262
336-882-BULB (2852)

Order Line: 800-692-3051
Technical Support Line: 336-882-2854
Fax Line: 336-882-2819

Hours: 8 AM to 4 PM EST Monday through Friday

Sales: Address changes, invoice copies, tracking and delivery confirmation numbers, order status, product availability, payment options, shipping quotes, returns, damage claims

Technical Support: Help finding a product not listed, determining the correct lamp for your application, lamp handling and premature lamp failures

International Orders: Large international orders that require special shipping arrangements and quotes

If you have compliments, complaints, suggestions, or help with areas not listed above please contact:

Ron Miller
General Manager