Dometic M65-5000 Marine Toilet - WhiteWood The Dometic M65-700 Marine Toilet is constructed with a Type III MSD 6.5 gal. 24.6 l tank and makes a great substitution for permanently installed portable toilets. The Marine Toilet is a white all in one toilet designed with a plastic material including a enameled wood seat. This boat toilet features a slow close lid eliminating noise and late night startles. Ceramic toilet bowl and high-strength ABS tank provide many years of use Slow close style lid