What Goes Into a Chain Link Fence
Chain link looks simple, and it is, but a few parts decide how stiff the fence feels when you lean on it and how well it keeps its shape over the years. These are the words you'll see on a chain link price, in plain terms.
Wire Gauge
Gauge is the thickness of the wire, and the numbers run backward: the lower the gauge, the thicker the wire. So 9-gauge wire is heavier than 11-gauge. For a home, the Chain Link Fence Manufacturers Institute recommends 11½-gauge wire for a fence 3 to 5 feet tall and 11-gauge for one 6 feet or taller. Those are the industry's recommendations rather than city rules, and heavier 9-gauge wire is there if you want a stiffer fence. On vinyl-coated chain link, the gauge is measured on the steel inside the coating, so the plastic doesn't make the wire sound heavier than it is.
Mesh Size
Mesh size is the width of each diamond, measured as the gap between two parallel wires. As a general rule, the smaller the diamond, the stronger the fence. For a home fence, the manufacturers recommend diamonds no larger than 2⅛ inches at 3 to 5 feet tall, and no larger than 2 inches at 6 feet and up.
Posts
The posts at the ends, at the corners and on either side of a gate do the heavy work, because the mesh pulls against them. The industry's guidance makes those posts generally a size larger than the ones in between. The line posts along the run hold the mesh up, and the same guidance spaces them no more than 10 feet apart.
Top Rail or Top Wire
The top of the fence is finished one of two ways: with a pipe rail running along the top, or with a heavy wire run from end to end. A top rail gives the fence a firmer, more finished edge. The industry's own drawings show a wire along the bottom of the mesh either way, which keeps the bottom from hanging loose.
The Edges of the Mesh
Along the top and bottom, the wire ends are either twisted together or bent back into loops, which the trade calls knuckled. The manufacturers say a home fence should be knuckled at the top and the bottom, and with kids and dogs along the fence, that's the finish we ask for.