These are the Replacement UVC Electrical Assembly Units for the Hozelock Bioforce Revolution range of pressurised pond filters. The Bioforce Revolution UVC Electrical Units come complete with a 5 metre pre-attached electrical cable. The Hozelock Bioforce Revolution UVC Electrical Units are available in 3 models to suit the relevant pond filters: Z10032 18w UVC Electrical Unit - Suitable for the Bioforce Revolution 6000 Z10035 24w UVC Electrical Unit - Suitable for the Bioforce Revolution 9000 Z10038 36w UVC Electrical Unit - Suitable for the Bioforce Revolution 14000 Genuine Hozelock spare part Comes complete with cable Available for the Hozelock Bioforce Revolution 6000, 9000 & 14000 Filters