GPH843T5L/4 UV Lamp

GPH843T5L/4 UV Lamp

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This is a GPH843T5L/4 UV compatible replacement lamp for various uv systems. When you purchase from us, you are guaranteed a quality replacement part that is designed to keep your water safe. We support our products and will gladly assist you with any pre or post purchase questions. All of our products carry a 1 year warranty to give you peace of mind with your purchase.



What systems does this UV bulb fit?

American Ultraviolet = GML440, L-024433, MRS3648P

Aqua Azul = L-1-803, L-1-807

Atlantic Ultraviolet = 05-0560, 05-1382, 05-1534-R

Glasco UV = 1308, 8030, GUV-15, L-050433

Ideal Horizons = LMP41031, LMP42019,

Pura UV = 89502, UVSS-15, UVSS-15M

Siemens / Sunlight Systems = B10010278, LP4050, LP4055, LP4420, SB Series, SBDOH Series, SBH Series, W2T165819

Ultra Dynamics (UDC) = 1308-0, 7001-803, DW-15, S-15, S-30


This lamp goes by the following part numbers:

GPH843T5L/4, 4-843T5L


Exact Fit UV® is the registered trademark of  Exact Fit UV®, the manufacturer of the Exact Fit UV® ultraviolet systems. is not affiliated or in association with Exact Fit UV®. We do not sell originally branded Exact Fit UV® products. however sells different brands of ultraviolet lamps and replacement parts that are compatible with Exact Fit UV® systems and are of equal or greater quality.


Lamp Life is 9000 hours (1 Year) Prorated warranty.
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