We make these mounting plates, by hand, and sell them here to help support this site and keep it growing. When you calculate your time, the waste material, and the tools you may not have, these mounting plates become a pretty good deal. The mounting plate is made from 1/2" UV resistant King Starboard and all edges have a smooth radius to prevent sharp edges.
SEE INSTALLATION INSTRUCTIONS HERE (LINK)
Specifications:
Fitment: Edson 1" Diameter by 9.5" Hole Center Pedestal Guards
Hole Centers 9.5"
Hole Diameter - Sized to fit 1" OD SS tube
Width 12"
Depth 5.5"
Material 1/2" White Starboard