High Quality Filters Compatible with any Big Blue 20” housing. Compatible with systems from: Express Water Culligan 3M Aqua-Pure GE APEC Pentek Whirlpool Global Water DuPont Costway Olympia Glacier Bay Smart Aqua Life Geekpure Aquasana US Aqua The Perfect Water. All mentions of brand names or model descriptions are made strictly to illustrate compatibility. NOTE: Filter cartridges need to be replaced every 1 to 12 months (average 6 months) and the membranes every 12 to 24 months, and all depend on the incoming water quality, water temperature, and if the water is biologically safe for drinking. These numbers, however, are usually just guidelines. GAC Filter GAC 20" T33 Coconut Shell Carbon Filter - Size 4.5" x 19 7/8"100% coconut shell carbon filter media. Sediment Filter 5 micron 100% PP Polypropylene for compatibility with a wide range of process fluids. 5 Micron , Micro-Denier melt-blown filtration fiberFormed by thermal bond without use of any binders and adhesives. Maximum Operating Pressure: 125 PSI Operating temperature: 40-100°F Dimensions: 20" x 4.5" Maximum Flow Capacity: 1 - 30* GPM Pleated Sediment Filter 10 micron Material: Pleated PolypropyleneSize 4.5" x 19 7/8" fits most Big Blue filter housing.Washable filter / minimize the filtration cost. Coconut Shell Carbon Filter Sediment Filter 5-micron Pleated Sediment Filter 10-micron Add to Cart Add to Cart Add to Cart Customer Reviews 3.2 out of 5 stars 3 4.7 out of 5 stars 93 4.5 out of 5 stars 2 Price $58.95$58.95 $24.95$24.95 $48.90$48.90 Size 19.75” x 4.5" 19.75” x 4.5" 19.75” x 4.5" Filtration 5 Micron 5 Micron 10 Micron Material Coconut Carbon Melt-Blown Polypropylene Pleated Polypropylene Max Temperature 100°F (38°C) 100°F (38°C) 100°F (38°C) Life Cycle 6 Months 6 Months 6 Months