Blue Label Gemini 25

Description Blue Label Gemini 25 Filter Cartridge. This cartridge was manufactured by Magnum New Zealand that produce around 80% of all pool filter cartridges used in Australia. This shows a range of spa cartridge ends shapes so you can check what the cartridge style is called. Outside Diameter 144mm. Length 176mmmm. Top-end closed. Bottom-end 49mm SAE Threadmm In The Box – Blue Label Gemini 25 cartridge.