4 Way Rack W/ Rectangular Tubing Slant Arms and are 16" long. Arms are independently adjustable every 3" from 48" to 72". Includes adjustable levelers. Frame and legs are made of 1" square tubing. Inner arm uprights are made of 0.83" square tubing. Blade arms are made of 1/2" x 1-1/2" rectangular tubing.