The Single Stage Whole House Sediment Water Filter uses Big Blue filter cartridges (20" x 4.5" aka Big Blue) and large 1" ports are used to reduce the pressure drop in any home. Our units come fully built and ready for installation. So what makes these different than everyone else? Most competitors use a smaller filter cartridges (ex: 10" x 2.5") with smaller ports. Although these units may be fine for small homes or offices, they will not effectively remove all contaminants for larger homes that demand a high flow rate. Pre-loaded Filter: 5 Micron Sediment Filter Removes/Reduces: Sediment Oil Grease Rust Dirt Filter Specifications: Sediment Filter Life - 6-12 months Recommended Maximum Flow Rate: 8 GPM* Includes: Filter Wrench Metal Wall Mounting Bracket Installation Instruction Included 100% Satisfaction - 30 Day Money Back Guarantee 1 Year Limited Manufacturer's Warranty Specifications: Maximum operating pressure: 100 PSI Operating temperature: 40-100oF Dimensions: 28" height x 8" width x 8" depth