DuraBulb Twin Pack Replacement 13W UV (Ultra Violet) Bulb Lamp for Pond UVC Filters & Clarifiers

2 x 13W DuraBulb Replacement UV UVC Bulb For 13Watt Pond Filters And Clarifiers 

2 x 13W UV PLS Tubes

253.7nm UV Output For Maximum Sterilisation

Length: 17.4cm 

This is the G23 fitting (1 lug on each side) 

Suitable For Fish Pond & Aquarium Filters  

Compatible with the Hozelock Easyclear 9000, Blagdon Pressure Filter 4000, 6000 & 10000 and many other 13W UVC Pond Filters with a G23 fitting

1 Year Warranty ~ We Recommend Changing After 12 Months To Maintain Maximum UV Output