This kit can be built to any dimension smaller than 24'x12' and includes the following:
 
4x   4x4 3 way Brackets
6x   4x4 base plate Brackets
2x    4x4 4 way Brackets
16x  2x4 Brackets
224x    2" Stainless Steel Pan Head combo drive Screws
64x     1.5" Stainless Steel Pan Head combo drive Screws
304x    Plastic washers and Screw caps
 
The openings on 4x4 brackets measure 3.6" x 3.6" and 1.5" for the 2x4 brackets.  Every Monkey Bracket is handcrafted in Orlando Florida.    The walls are constructed of thick 3/16" Aluminum tubing, powder coated with a black satin finish with a light sheen.   
 
Necessary materials not included
 
Lumber
Stainless steel anchoring hardware for base/wall plates.   The bolts you use will vary depending on your mounting surface material.   If you're unsure what to use, we're happy to assit with recommendations.