The manufacturer doesn’t list an exact weight capacity for the Sunline 90" 2" Steel Clothesline Posts, but they’re built from heavy-duty galvanized steel and designed to be permanently cemented into the ground. That setup allows them to support heavy laundry loads—including wet comforters, blankets, and multiple lines of clothing—without bending or sagging. A typical setup with two posts and properly tensioned line can handle well over 100 pounds of distributed weight, assuming the posts are installed securely and the line is high-tensile.