attwood Gas Tank Gascan (6-Gallon) See-thru tank makes fuel level visible from any angle. Tank includes vented cap, filtered pick-up tube, and gas line coupling for 1/4" NPT fittings. 21" L x 11-1/2" W x 9-1/2" H. Adapts to all outboard engines. Massachusetts fire marshal approval number PC-156 Meets both ABYC and CSA.