238 series pedestal seat socket base 238312-2 fits 238 series pedestal posts and seating accessories. Easy to install with six screws or bolts through the deck. Uses standard 3" hole through the deck. Add more seating to your pontoon, fishing or cruising boat with the 238 series of seating products. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems water systems seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.