Specifications include, but are not limited to: HD steel tubular frame construction All channel iron to be 1.5 x 4inchesLong tube frame to be 2 x 4 x 0.25 inches All tubing for sign cab to be 2 x 2 x 0.25 inches and welded all the way around jointsAll tubing to be welded closed except for the trailer tongue3.1.4.1Trailer tongue must have the light plug wires going through it with the rear of the tongue openTrailer and cabinet framework to be powder coated orange7,000-lb axle with electric brakes and 15-inch HD radial tires mounted on steel rimsFront box for storage of four (4) 6-Volt batteries, solar regulator, and arrow/message board controlsBox must have cover and allow for drainage/venting of any moistureSix (6) stainless steel sandbag storage boxes, bolted to trailer frame on top flanges for optional removalTo have drain holes in the bottom of each box and open corners to allow for sand and water drainage