Sterilight S410RL HO Compatible Replacement Lamp for Viqua SP-410 SPV-410
This is a Caprock brand lamp that is compatible with the Sterilight / Viqua S410RL HO OEM lamp selling at a much higher price. It is not made by Sterilight / Viqua. The lamp has a special multi-step 4 pin base, designed specifically for systems by Sterilight.

It measures about 508mm (about 20 inches), excluding the four pins on the end of the lamp.

It is used to replace the OEM lamp in these and other systems:
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