2023 Bennington 21 SXFAPG - Fishing, Miller Marine is the worlds largest Bennington pontoon and tritoon dealer! Disclaimer: Production photos from the manufacturer are displayed. Photos from Miller Marine to come. Max HP: 115-150 HP Overall Length: 22 ft. 9 in. Deck Length: 22 ft. 1 in. Deck Width: 8 ft. 6 in. Weight: 2095-2568 lb. Capacity: 10-11 Persons Fuel Capacity: 22.4 gal.