High boy buildings are constructed with 14 gauge allied gatorshield structural steel tubing for long lasting durability. high-quality buildings house rvs and other tall equipment up to 20 1/2 feet high. 24 ml premium poly cover resists environmental elements. At 26 feet wide by 80 feet long, this style provides ample storage. heavy-duty mounting feet feature pre-drilled fastening holes for easy assembly. Color is gray.