However for the circumstances where man entry is essentially required, Supreme has introduced Ultra 1000 mm manhole. The Ultra 600 chamber as well as Ultra 1000 manhole offer advantages like water tightness, easy and fast installation and less maintenance resulting in effective solution.

The Ultra 1000 manhole consists of base, a shaft and a cone (at the top). Shaft is available in different lengths and can be placed one on the other for increased depth. The complete set is suitable up to 6 m depth. The advanced cone and shaft design with ribs and corrugation and shape of cone makes the assembly strong enough and stable to withstand heavy traffic loads. It has spacious 600 mm entrance and is provided with ladder. The ultra 1000 manhole base is available in different flow profiles and suitable for pipe connection from 160 to 400 mm.

Specially designed in-situ adapters are available for accessing any line at any height (through shaft) or angle other than the inlets of available or selected configuration of the chamber. This adaptor can be used for assessing any line even in post installation condition.

In case of Ultra 315 and Ultra 450, Heavy weight Frame and cover is available which can tilts and rotate to suit site conditions. Cover is designed for installation in light traffic and a pedestrian area is made in uPVC with loading capacity of 35 KN i.e. for 3.5 tone wheel load. Light duty cover is also made available in Ultra 250, Ultra 315 for pedestrian areas where traffic load is not expected. For internal use, sealed cover in heavy weight are also available. Frame and cover is designed to be push-fitted into either a riser or a base. Each cover supplied with 4 screw holes suitable for self tapping screws provided with frame and cover.

For heavy traffic condition, SFRC frame and cover / GRP is also available for Ultra 450, Ultra 600 chamber and Ultra 1000 manhole. (Covers with grating are also available.)