Approx. 52 gallons (200 Liters) non jacketed. Alloy holding tank. 316L. Max 50 psi at 100F. Min 50 psi at -20F. SN 104381-001. Man. 2000. On casters. With bottom agitator, Novaseptic Drive Model GNP500. 1/3 hp. Turbine. Agitator on 2 1/2" sanitary valve with 1" side mount. Top ports - 4 x 1 1/2" sanitary fitting. 1 x 4" sanitary with sight glass. Center port 8 1/2" sanitary with 3" center sanitary. approx. interior dims: 66 x 60cm.