Comes apart into 3 pieces. On the sides are heavy tube steel with solid iron in the middle with cast iron decorative caps & Medallion Flower. No nuts or bolts the top just slips into the sides. We recommend laying the arch down to put together then a person on each side to walk it up. Measures 93" tall x 60" wide x 17" deep. The inside walkway is 92" tall x 57" wide.