This 4x4 pergola beam bracket makes it easy to assemble the frame of a DIY wood pergola with 2 or more blocks/sections (either free-standing or attached to house). It's made of commercial grade 14-gauge steel (approximately 2.0mm thick) with protective weather-resistant powder coating, ensuring it will look as amazing in ten years as it does now. The steel pergola beam bracket has 4 channels (i.e. 4 arms), one of which is for the vertical post going to the ground and the remaining three of which are for the roof beams. The bracket is made for 4x4 wood posts (actual size: 3.5 x 3.5 inches) and includes stainless steel screws for securing the 4x4 wood posts into the bracket. Wood (lumber) not included.