This Attwood Molded Bucket Seat installs securely and provides durable and comfortable seating on a boat. This is a 1-piece, molded plastic boat seat constructed using high-impact plastic. This gray seat comes with mounting screws. It measures 18 inches W x 21 inches D x 16 inches H. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years.