O Scale 1:48
The sanitary sewer is a system of underground pipes that carries sewage from bathrooms, sinks, kitchens, and other plumbing components to a wastewater treatment plant where it is filtered, treated and discharged. The storm sewer is a system designed to carry rainfall runoff and other drainage.
This is an O scale (1:48) model of a part of this system – a Eccentric Cone. at the very top and is the casting that the manhole cover and mounting ring sit on .. this is normally the only part you see in the road.
The iron mounting ring and manhole covers for this can be found at – O Scale (1:48) 24″ Manhole Cover