Now you can add UV protection to any skimmer. The skimmer UV kits from Proline are compact kits are designed to fit even the smallest of skimmers while providing UV clarification to your pond. Included fittings adapt to create virtually limitless configurations. Extremely compact footprint fits in the smallest of skimmer chambers. Fitted with 1-1/2-inch MPT inlet and outlet to adapt easily to most 1-1/2-inch pumps. Included diverter valve regulates water flow through UV. Includes 2 couplings, rotating union and O rings. 20 Watt skimmer UV.