LSE Lighting 28 watt UV Clarifier Bulb for Laguna PT-1676 PT-1675 Filter Brand: LSE Lighting - Wattage: 28W Bulb Type: Ultraviolet UVC Germicidal - Provides Water Purification Base: 4pin Base (4pins on one End) - Warranty: 1 year (recommend to replace every 12 month) This replacement UV Lamp by LSE Lighting brand is 100% compatible to use with Laguna Pressure Filter Laguna PT-1676, PT-1675 Filter models. All UV lamps listed are compatible brand (LSE Lighting) UV products. We do not sell Laguna Hagen brand lamps. All Laguna Hagen brand names, trademarks and logos are property of Laguna Hagen respectfully.