Our HS20 rated cattle guards meet the demanding specifications needed for State and Federal requirements such as DOT, BLM, USFS, NP, and US Military installations. These cattle guards will provide years of rugged service in commercial applications such as mining, forestry, agriculture, and petroleum production. They are also the cattle guard of choice for residential usage where city, county, or state regulations require the HS20 rating. Certified structural steel is used in the manufacture of all Lee Products HS20 rated cattle guards.