Flat Bench has a black powder coated frame and four seat material options. Your choice of 2 x 4 inch pressure treated No. 1 Southern Yellow Pine, 3 x 4 inch "C" and better Douglas Fir, or 4 x 4 inch gray, cedar, or brown Recycled Plastic slats. The legs are 2 1/2 inch square steel tube with 3/8 x 4 inch mounting plates. 6 or 8 feet long. Comes standard with Surface Mount legs.