Bull Barn's Hinge Joint 47-inch-tall is a tried-and-true field fence that flexes to accommodate hilly terrain and animal pressures, holding up without sagging. Class 3 Galvanization deters rust better than Class 1. High-tensile wire's strength is superior to low carbon. This durable fence has graduated spacingsmaller openings at the bottom. Deep tension crimps allow a strong stretch that flexes over terrain. Fewer fence posts are needed to maintain a strong high-tensile fence than would be required with low carbon wire. Each roll weighs 120 pounds, making it lighter and easier to handle. This durable, American-made fence has a 20-year guarantee. Keep predatory animals out; keep farm and ranch animals safely in.