Quick & Easy Installation: Simplify your setup with the Water Filter Housing, designed for hassle-free installation. The system features 1" NPT in/out brass ports, a 1/8" gauge port, and a built-in pressure-release button for convenient filter replacements. The package includes all essential tools, 2 x big filter blue housings, 2 x brackets, 1 x wrench, 2 x 1/8" gauge port plug and 2 set of screws—ensuring a smooth installation process. Gauge Port: This filter housing comes equipped with a 1/8" gauge port and a plug, providing the option to easily install a pressure gauge at any time. By adding a gauge, you can monitor the pressure after the filter, which helps indicate when a pressure drop occurs. This drop suggests the filter may be clogged with debris and needs replacement to maintain optimal performance. Food-Grade, BPA-Free Materials: Crafted from premium, BPA-free, and non-toxic plastics, our filter housing ensures the highest standards of safety and purity. The durable blue housing, complete with an optional feature to add a pressure gauge in the future, allows you to monitor filter performance effortlessly if needed. When the gauge readings drop, it's a clear indicator that it's time for a filter replacement—no need to open the unit for inspections. (Note: Gauge sold separately ASIN B07DTHM4SD.) 1" NPT Brass Ports for Durability: Equipped with sturdy 1" NPT brass threaded ports, this BB water filter housing ensures a reliable and leak-resistant connection. Customize your filtration system by selecting compatible sediment, carbon, or other filter cartridges based on your water quality needs. (Note: Filters are sold separately.) Durable and Versatile Design: The 20" x 4.5" Blue whole-house filter housing can handle a maximum pressure of 90 PSI, while the recommended on going running pressures between 40–70 PSI. Designed with a feed water pH range of 4.0–10 and 1" NPT input/output ports, this filter housing is built for heavy-duty performance. Compatible O-Ring for Max Water Systems: For a replacement O-ring specifically designed for Max Water 20" BB Systems with brass ports, search for B07HG8Y4HD to ensure a perfect fit and optimal performance. Why Choose Max Water: With over 15 years of expertise in water filtration, Max Water is trusted by millions of families worldwide. Our systems are free from Bisphenol A and toxic plastics, offering reliable, eco-friendly solutions for your water filtration needs. Detailed Description: 20 Inch x4.5 Inch BB Blue Whole House Filter Housing 1Inch Ports W/ Pressure Release Includes: 2x 20 inch x 4.5 inch BB double o ring filter housing with pressure release button and 1/8 inch NPT pressure gauge hole Only + 2 x bracket + 1 x wrench. (Parts are not assembled together) Specifications: Feed water pH range: 4.0 - 10.0 Double O ring Housing NPT in/out Port Sizes: 1 inch Easy screw off for quick filter changes Accepts standard 20 inch x 4.5 inch diameter water filter cartridges Blue Filter housing for easy maintenance, Heavy-duty construction Rated for pressures up to 90 PSI (6.20 bar) maximum operating temperature 125°F (52°C) Made from grade polypropylene Head/ Cap Color : Black Sump/ Housing Color : Blue Pressure Release: Yes Preferable feed water pressure range: 20 - 90 PSI to Get the best filtration results keep it less than 60 PSI. Maximum feed water TDS: 2000ppm Flow Rate / GPM 1-40* GPM for 1 inch Inlet / Outlet 1-35* GPM for ¾ inch Inlet/Outlet * Pressure drop will be determined based on feed water pressure, filter cartridge selection, fluid viscosity, filter life and conditions.