Wise Rotomolded Deluxe Captains Chair and Seat Slide, White Deluxe Roto Molded Captain Chair, Cushion Set and Wise Seat Slide 8WD374 Includes Wise Seat Slide #8WD374 Fits 2-3/8" OD Diameter Pedestal Classified "AD" for Drivers Position with Easy Grip Lock Handles Seat Dimensions 21" Height, 17.5" Width, 24" Depth, 15" Seat Depth 6 Year Warranty on Frame, 3 Year Warranty on Upholstery