Twin Pack of high quality 5W DuraBulb UVC bulbs for 5 Watt UV Pond Filters and other sterilisation applications Length: 10.2cm Base: G23 2-pin 12 month warranty with all DuraBulb bulbs It is recommended to change the bulbs every 12 months to maintain maximum UV output Compatible with the Hozelock Easyclear 3000, Bioforce 2200 & 3000, Blagdon Mini Pond UVC 4500 and many other 5W UVC Pond Filters.
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