Wise High Back Boat Seat Seat Dimensions - Height: 23.75"; Width: 16.85"; Depth: 20.5"; Sitting Depth: 15" State of the Art, High Impact Injection Molded Plastic Frame High Compression Contoured Foam Padding Design with Marine Grade 26oz; Vinyl with UV & Mildew Inhibitors OEM Style No-Pinch Hinges Mounts on any flat surface or any 4 bolt BIA pedestal system