Wise 8WD734 Series Standard Low Back Boat Seat - Features No-Pinch aluminum hinges and injection molded High-Impact seat frame. Heavy Duty 28 oz. Marine Grade Vinyl withstands the effects of sun heat rain and soiling under normal conditions. Marine Grade high compression foam padding. Includes mounting fasteners to mount seat to any standard 5-1/4 BIA 4 bolt pedestal system or swivel. Maximum weight capacity rated 250 lbs. Seat Dimensions - Height: 19 Width: 16 Depth: 18. 5 Seat Depth: 14