Easy to install with six screws or bolts through the deck. Add more seating to your pontoon, fishing or cruising boat with seating products. Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products. Features 7" x 7" square stainless steel seat base plate All Snap-Lock series components snap and hold together Clear coat finish for appealing look and superior corrosion resistance Specifications Material: Stainless Steel Size: 7 x 7 in. Country of Origin: USA