The Bolt Down Bracket System enables pergola owners to mount their pergola safely and securely to a wood deck or cement patio. Simply bolt the galvanized steel brackets into place. Insert 4x4 pressure treated wood posts (purchased separately) into the brackets and screw them in place. Slide your pergola posts over the wood posts and screw the pergola posts into the wood.The result is a lasting installation that is safe and rigid. This mounting system was specifically designed for Vita brand pergolas. We highly recommend that if you are installing any of these vinyl pergolas on a flat surface, you purchase this kit. The mounting system comes with brackets and 1.5” (3.8cm) self-tapping screws. Compatible with 4x4 posts only.It’s Vita’s conviction that good starts with giving. As a company, they are committed to looking beyond their personal lives and asking, what can we give? One project that Vita supports is The Inn of the Good Shepherd. It is a homeless shelter and food bank that distributes over 6,000 lbs of fresh produce into their local community each week. They also support global non-profits. These include The Sanmen Youwei Library in China and Thrive in Kageyo, Rawanda. With training and tools, they empower people to grow an abundance of healthy, organic, disease-fighting foods.