Filter Sock, PhosFilter

Stop Harmful Substances From Entering The Stormwater System.. Use in front of storm drains, around downspouts, in gullies and ditches, or anywhere there is potential for harmful stormwater runoff. Woven polymer casing allows water to pass through quickly while filtration media inside removes pollutants. Available in 9-foot lengths. Units can be overlapped for longer coverage. Looped ends allow units to be staked in place and also assist in transport. Available with different types of media depending on which pollutant is present. Helps comply with NPDES, 40 CFR 122.26 (1999) and TMDL requirements. Made in the USA.