Great for powering two 13,500 BTU air conditioners with 1500 to 4000 Watts reserve. Fully enclosed with mufflers and retrofittable to the Onan® Marquis Gold (same footprint and bolt mounting pattern). Full pressure lubrication with spin-on oil filter. Patented belt-driven system increases starting capability. Lower RPM improves fuel efficiency with lower noise levels. 33.7in. L x 22.2in. W x 19.6in. H