This Pentek 158643 3/8" #10 3G Slim Line clear filter housing with integrated mounting bracket and pressure relief is suitable for low flow rate applications that have space restrictions. The sump is made of clear styrene-acrylonitrile (SAN) for on-site viewing of flow and cartridge condition, and the cap is made of reinforced blue polypropylene for strength and resistance to chemicals. The cap has 3/8" female National Pipe Thread Taper (NPT) threaded input and output connections and a nitrile butadiene rubber (Buna-N) O-ring to ensure a watertight seal. A pressure relief button on the inlet side of the cap releases pressure in the housing for changing filter cartridges. The housing can be used with a 10" x 2-1/2" sediment or carbon filter cartridge (sold separately). It has an initial pressure drop of 2 pounds per square inch (psi) at a flow rate of 5 gallons per minute (gpm), a maximum operating pressure of 125 psi, and a maximum operating temperature of 125 degrees F (51.7 degrees C). This filter housing meets National Sanitation Foundation/American National Standards Institute (NSF/ANSI) standard 42 for quality assurance, and is for use in various applications, including residential drinking water filtration, food service, and humidifying systems, among others.Specifications Filter cartridge size (H x W) (sold separately) 10 x 2-1/2 inches (254 x 63.5 mm) Initial pressure drop at 5 gpm 2 psi Maximum temperature 125 degrees F (51.7 degrees C) Maximum pressure 125 psi Maximum dimensions (H x W) 13-3/8 x 5-3/8 inches (340 x 137 mm) Materials and structural integrity certification NSF/ANSI standard 42 H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.Water filters remove undesirable particles, chemicals, and microorganisms from water by means of a semipermeable barrier, adsorption, or biological processes. They are made of densely packed synthetic or natural fibers that trap suspended particles, materials that block microbes or adsorb unwanted chemicals, or substances that cause a chemical change, such as acid neutralization. For most residential, commercial, and industrial applications, water filters are manufactured in the form of replaceable cartridges that fit inside permanent housings. Filtration systems typically consist of a series of two or more types of filters, each designed to remove different contaminants. The performance of filters is measured by the minimum particle size that is blocked, the percentage of particles or microorganisms that are removed, the downstream concentration of unwanted chemicals, the maximum flow rate, and the amount of water that can be filtered before the filter must be replaced. Water filters are used in a wide range of applications, including drinking water purification, swimming pools, industrial processes, and irrigation, among others.Pentair manufactures industrial, commercial, and residential water filtration components and systems. The company, founded in 1966 and headquartered in Minneapolis, MN, meets International Organization for Standardization (ISO) standards 9001 and 14001 for quality assurance.