Planning to install a chain link fence on concrete surfacing? You'll need a sturdy mounting plate to weld the bottom of a fence post to. This plate also needs some method of being secured to the floor. And if the plate is galvanized, aided with rust resistance, the better. This 4" x 4" x 1/4" Galvanized Plate is able to accomplish all of the above. After welding a fence post to the center, you can install these plates with screws or bolts, applied through four pre-drilled holes in the corners. It is made of galvanized steel, which provides superior rust and corrosion resistance, aiding in the longevity of your chain link fence.