2024 Bennington 188 SL - L Bench - Pontoon, 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: 60 HP Overall Length: 18 ft. 4.5 in. Deck Length: 17 ft. 4 in. Deck Width: 8 ft. 0 in. Weight: 1721 lb. Capacity: 7 Persons