The Pre Filter Housing for use with Blue Cylinder dechlorinator.
Suitable for 10 inch Cartridge.
They accept a wide variety of 10 inch x 2.5 cartridges, the Filter Housing comes with 3/4 inch Female threaded ends, by using the Filter housing connectors you can join as many as you want together!
Note: item does not come with the 3/4 inch male connectors as shown in picture these have to be purchased as extras.