Watts Hydro-Safe HSUV-SS-24 UV Light Bulb for Germicidal Water Treatment Item:UV Bulb 18" and it has an

18" and it has an arc length of 57

Robustness: this system is designed to be used

Pins: Single pin

The four pin on a single end light bulb has ceramic as its base material and an average lifespan of 10

Arc Length: 270mm

Watts Hydro-Safe HSUV-SS-24 UV Light Bulb for Germicidal Water Treatment Item:UV Bulb 18" and it has anGuaranteed Replacement Ultraviolet (UV) Bulb 4 pin, single end (stepped base) 33. 74 Inch Length Lamp Worry Free Performance for 1 Year The Watts Hydro Safe HSUV SS 24 UV Light Bulb For Germicidal Water Treatment is a guaranteed replacement UV bulb that has four pin on a single end stepped base. With a lamp length of 33. 74 inches, the germicidal water treatment bulb has an average lifespan of 10,000 hours. The lamp bulb is compatible with germicidal