WEDECO/Ideal Horizons - ME-10 Water Treatment Germicidal UV Light Bulb 5W you can find them here

you can find them here

Guaranteed 100% Compatible Replacement Ultraviolet (UV) Lamp - Mercury Wavelength - 41 Inch Arc Length - 44 15/16 Inch Total Length (end to end)

Drawing of Replacement UVC Bulb Item # 192582 (PDF)

99 inch lamp has a four pin base that is used for water purification

The quartz plate prevents dirt

WEDECO/Ideal Horizons - ME-10 Water Treatment Germicidal UV Light Bulb 5W you can find them hereGuaranteed Replacement Ultraviolet (UV) Bulb 4 Pin on a Single End 22 Watts 17. 72 Inch Length Lamp Worry Free Performance for 1 Year The Wedeco Ideal Horizons ME 10 Water Treatment Germicidal UV Light Bulb is a four pin on a single end lamp bulb that gives you a worry free performance for an entire year. The 17. 72 inches lamp bulb has ceramic as its base material and a T5 bulb shape. The 22 watts UV bulb has an average lifespan of 10,000 hours after