Hozelock Lamp 8w UVC Lamp (Double Ended) interpet Versatile Use: Adheres to a

Versatile Use: Adheres to a variety of materials

Here's what Oase say about the product:

Includes BioMax biological media

Sintered glass for maximum bacterial colonisation

Hozelock Lamp 8w UVC Lamp (Double Ended) interpet Versatile Use: Adheres to aThis is a genuine double ended Hozelock 8w UVC Replacement Bulb, part number Z11108, which is suitable for a Hozelock EcoPower 4500 5000 Pond Filter. These bulbs will also fit many other brands of filters, not just Hozelock. Bulbs should be changed every 6 to 12 months as their performance will deteriorate over time. Please check your manual to make sure you are buying the correct wattage or feel free to get in touch if you need help.