The Adjustable Better-Bench by Innovis is produced of alloyed aluminum. Better-Bench measures 3" high X 14-1/2" deep X 33-1/2" long and extends to 62" long. A triangular mid-point corbel support measuring 12" x 12" x 17" and 2" high is included with the Adjustable Better-Bench to install it at a length of 36" or more. The Adjustable Better Bench and Bench Support include hollow wall anchors and wood screws for mounting. Price listed is for (1) Adjustable Better-Bench and (1) 17" Triangular Bench Support.