🟣Complete Combo Kit – Includes one 12-inch UVC12HCP H-lamp and one 5-inch UVV5CL oxidation lamp, designed for PremierOne and PureOne Millennium systems. 🟣Engineered for Compatibility – Fully compatible with MUV-403H-12/5, MUV-7-50-DR-12, and other PremierOne UV air models requiring this service kit. 🟣Dual-Lamp Protection – Combines UV-C (254nm wavelength) with an oxidation lamp for ideal control and performance. 🟣Durable Quartz Glass Construction – Both lamps are built from premium quartz glass for maximum UV transmission and long-lasting reliability. 🟣Precision Base Designs – The 12" UV-C lamp features a 4-pin square formation base, while the 5" oxidation lamp includes a standard 4-pin base, ensuring easy installation. 🟣Professional Quality – Manufactured in an EPA Registered Establishment (No. 96823-PA-1) and proudly designed in the USA by LSE Lighting, a trusted UV brand. The LSE Lighting LSK07403H-12/5 Combo Kit is a high-quality replacement set that includes both a 12-inch UV-C lamp (UVC12HCP) and a 5-inch oxidation lamp (UVV5CL). Together, these lamps provide dual-layer protection, combining powerful UV-C at 254nm with oxidation-based odor control for ultimate performance. This combo kit is fully compatible with PremierOne systems, including models MUV-403H-12/5, MUV-7-50-DR-12, and other units requiring the 12"/5" lamp combination kit. It is also compatible with PureOne Millennium systems, offering equivalent performance to original equipment without the OEM price tag. Built from premium quartz glass, the lamps are designed for maximum UV transmission, high durability, and consistent operation. With a 425mA operating current, these lamps deliver reliable efficiency and long service life. ⚠ Important Note: This is a compatible LSE Lighting brand replacement kit. We do not sell PremierOne or PureOne brand lamps. All brand names and trademarks are the property of their respective owners and are used strictly for compatibility and cross-reference purposes. ⚠ Safety Warning: Ultraviolet UVC light can cause harm to skin and eyes. Always wear protective eyewear and gloves during installation or replacement. What’s in the Box 1 × 12" UV-C Lamp (UVC12HCP, 4-pin square base) 1 × 5" Oxidation Lamp (UVV5CL, 4-pin base) Technical Specifications Brand: LSE Lighting EPA Establishment Number: 96823-PA-1 Kit Model: LSK07403H-12/5 Combo Lamp Types: UVC12HCP Lamp: 12" length, UV-C 254nm, 4-pin square base UVV5CL Oxidation Lamp: 5" length, 4-pin base Operating Current: 425mA Material: Quartz glass tube Application: PremierOne MUV-403H-12/5, MUV-7-50-DR-12, PureOne Millennium, and other compatible air systems Country of Origin: Designed in USA Legal & Compliance All lamps listed are LSE Lighting brand products. We do not sell PremierOne or PureOne brand lamps. All brand names, models, and trademarks are the property of their respective owners and are used only for compatibility and cross-reference purposes.