Sediment Water Filter Cartridge by Ronaqua 10"x 2.5", Four Layers of Filtration, Removes Sand, Dirt, Silt, Rust, made from Polypropylene (50 Pack, 5 Microns) Exercise & Fitness The maximum weight limit is Power and hand tools The maximum weight limit is 80 pounds (two 40 pound children) with an additional 12 pounds in the rear storage area Ready to DEFY the normal way of sitting down at your desk This is a filter for a standard Reverse Osmosis Water Filtration Unit or any type of Water Filtration Unit with a 10 inch housing This filter is wrapped and sealed and meets NSF (National Science Foundation) Standards and Regulations