3PP-10B 1-Micron Big Blue Whole House Water Filter Sediment, 10-Inch, 3-Pack Big Blue 10-inch 1 Micron Sediment Water Filter - Used for effectively removing most sediments from water This is a filter for pre-filtration of water and fits all 10 inch Big Blue Water Filter housings Product Lifetime - 10,000 gallons - replace two or three times a year - depending on your water quality This filter is wrapped and sealed and meets NSF (National Science Foundation) Standards and Regulations Dimensions: 10 inches x 4.5 inches (24.4 cm x 11.43 cm) Dimensions: 10 inches x 4.5 inches (24.4 cm x 11.43 cm) (Industry standard size for most in-house water filters)