Features: FUNCTION-Replacement housing for RO system,Widely used in RO system or pre-filtration. UNIVERSAL-Standard size for all RO systems using 10″ filters. INLET-OUTLET-1/4″ threaded in and out fittings. SIMPLE INSTALLATION-Easy to replace. Food grade Polyethylene will not cause pollution to water. 1 x Filter housing , 2 x O rings . RESPONSABLE MANUFACTURER- ISO9001:2008 certificated Manufacturer ,also Member of Water Quality Association (WQA) Specification: FEED WATER PRESSURE :35 – 100 PSITEMPERATE: 40 – 110°F/5-45°CPH :3.0 -11.0MAX TDS 1000 MG/LTURBIDITY < 1.0 NTUMAX SDI <4.0HARDNESS < 5 GPGIRON <0.1Life time :3 years Shelf life: 5 years in original sealed package. More valuable information: 1. What is dimension of the housing? Answer: It fits all standard sized 2.5 inch x 10 inch filters . 2. What is in the box? Answer: 1×10 inch slim housing 1/4 inch plastic NPT port , 2 x O-ring. 3. What is filters options? Answer: PP sediment filter, Remove sand, dirt, sediment. life time:6 months. PP Wound String Sediment Filter Cartridge 2.5"x10”,Remove sand, dirt, sediment. life time:6 months. Carbon block filter,Remove chlorine, taste & odors, very fine particulates. life time:6 months. Note: Question: Do you sell similar size or other whole house big blue housing options? Answer: Yes, you can enter the store to learn more. We list more housing options.Please attend and choose right size as you needed. If you are not sure,please contact with us.