The LPPP0001 is the 9 inch in replacement UV-C lamp for the following Ultravation product lines and model numbers:

Ultravation UltraMax UME Economy UV Series Integrated Lamp Models:
UME1000, UME2000

Ultravation UVS Monitored Germicidal UV Series Integrated Lamp Models:
UVS1000, UVS2000

Ultravation UVE Standard Germicidal UV Series Integrated Lamp Models:
UVE1000, UVE2000

The Ultravation UME, UVS and UVE series integrated lamp models UME1000, UME2000, UVS1000, UVS2000, UVE1000 and UVE2000 use Philips compact-twin "U" shaped lamps that effectively double the length and intensity of the lamp. All UltraMAX UV lamps use Philips Sterilamp technology. Patented Sterilamp technology means highest output over the life of the lamp.

The manufacturer recommends you change the UV lamps every 2 years under normal operating conditions.

Note:
If you have the UME2000, UVS2000 or the UVE2000 system you may need to purchase the two lamp pack to change all your UV lamps.