1.5 inch Male Thread x 1 1/4 inch Male Thread

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!