PURA - 10-212 UV Light Bulb for Germicidal Water Treatment SH7 Experts also state that it

Experts also state that it is necessary to replace the UV light bulb annually though it may continue to emit light for better efficiency

100% Compatible Replacement for Lamp/Model Number: GPH275T5L/4

Length: 843mm

This lamp bulb is filled with mercury and has an arc length of 71" and an overall length of 75

The lamp bulb is compatible with the following part numbers:

PURA - 10-212 UV Light Bulb for Germicidal Water Treatment SH7 Experts also state that itGuaranteed Replacement Ultraviolet (UV) Bulb 4 Pin 10 Watts 8. 34 Inch Length Lamp Worry Free Performance for 1 Year The Pura 10 212 UV Light Bulb For Germicidal Water Treatment is a guaranteed replacement UV light bulb that gives you clean purified water at all times. The germicidal bulb has wattage of 10 Watts and an average lifespan of 10,000 hours. The four pin bulb has a 8. 34" lamp length and provides a worry free performance for a year. We