Complete set 20 inch blue housing. With plastic wrench, screw and metal bracket. Pack of 4 sets. Equip with pressure release button for high pressure. Inlet/Outlet: 1 NPT Thread. Please refer above photo. Maximum Pressure: 90 psi (6.2 bar) , Temperature:40-110°F/5-45°C , Shelf life: 5 Years. Please lubricate the o-ring with silicon grease and use wrench provided to prevent leakage. You may search “whole house water filter ” on YouTube, there is some video about this housing, it is very helpful if it is the first time to install it. Protect filter housing from freezing. The rubber o-ring provides the water tight seal between the cap and the sump. It is important that the o-ring be properly SEATED IN THE GROOVE of a water leak could occur. What is dimension of the housing? It is standard sized housing for 4.5″OD x 20″ height filters. What is in the box? 4 x 20 inch blue housing with pressure release , 4 x plastic wrench , 4 x metal bracket and 4 bags screw. What is filters options? PP spun filter, Remove sand, dirt, sediment. Life time:6 months. Carbon block filter, Further remove chlorine, taste & odors, very fine particulates. The item “Geekpure 20 Whole House Water Filter Housing Fit 4.5 x 20 Filters Pack 4-Blue” is in sale since Wednesday, September 15, 2021. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “geekpurewater” and is located in Rowland Heights, California. This item can be shipped to United States.