Profile: Aztec Marking Co., Inc. designs and manufactures signs & sign frames. Our products include sign post, wire frames, stock magnetic signs, custom banners, and commercial signs. Yard sign posts re powder coated with a high gloss finish. Assembly is quick and simple, allowing easier transport. A rider attaches to the top of the cross arm. They are sold in quantities of 5. The open arm post unit stands 54" tall with a 28" cross arm with 16" center holes for sign attachment. The exclusive post unit is an inverted L, curved at the bend. It stands 54" tall with a 28" cross arm with 16" centers for sign attachment. The colonial post unit has the standard colonial look. It stands 66" tall and has either a 36" or 42" cross arm. Center holes for hanging panels can be 16", 17" or 19". Set-up is easy on a sturdy steel base with a foot push.