18W T4 UV-C Germicidal Replacement Lamp - 2G11 4-Pin

This 18W PL-L long compact UV-C germicidal lamp (WX-1U8U-9) for use in water treatment, pond/aquarium UV clarifiers, and commercial purification systems. The 4-pin design delivers high-output 254nm UV-C in a compact form factor.

Key Features & Benefits

• 18-watt UV-C output at 254nm wavelength for germicidal disinfection
• T4 lamp shape for direct-fit compatibility with existing fixtures
• 2G11 4-Pin base ensures secure, correct installation
• Ozone-free operation safe for occupied-space HVAC applications
• Suitable for water treatment, pond/aquarium UV clarifiers, and commercial purification systems

Product Specifications

• Wattage: 18W
• Voltage: 58V
• Lamp Shape: T4
• Base Type: 2G11 4-Pin

This lamp fits UV germicidal systems requiring a T4 shape with 2G11 4-Pin base, including equipment used for water treatment, pond/aquarium UV clarifiers, and commercial purification systems.

During the checkout process, you can choose from expedited services such as overnight delivery to standard ground shipping. We aim to ensure your order is delivered promptly and reliably, wherever you are.

All returns must be made within 30 days of purchase with the invoice. (After 30 days, Interlight credit only, Minimum 25% restocking fee, no returns after 60 days, special items order just for you are not returnable.)

At Interlight, your satisfaction is our priority. We offer a 30-day money-back guarantee on eligible products, provided they are returned in resalable condition with the original invoice.