The 3/4 inch Male Thread x 3/4 inch Male Thread connectors will enable you to add another Water Purifier Housing or even three if you like.

These 10 inch filter housings offer the versatility to meet all of your large-capacity filteration needs, including high-flow and heavy-sediment applications. The extra large housing allows for greater cartridge capacity, reducing the number of vessels required for high flow-rate applications. Sumps are constructed of durable, reinforced polypropylene.

They accept a wide variety of 10 inch 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.