Economy and municipal quality U-channel posts mostly differ in their weights. Ideal for private parking lots and indoors, economy posts weigh 1.12 lbs per foot while municipal quality sign posts weigh 2 lbs per foot. Municipal posts are 3-1/16" wide whereas economy posts are a little narrower (2-1/4"). Municipal quality posts are heavy duty and are a standard at municipalities. These are ideal for traffic signs, signs measuring 18” x 24” and larger.