550/30-series 3366073-N is a floating type, rounded frame for rounded blind cover (3366074-N) or grating (3366075-N). The frame is designed for Nordic conditions, in accordance with standard EN 124-2:2015, manufactured from grey cast iron EN-GJL-200 and is classified under Load Class D400.

The frame assembly is compatible with DN560 and DN630 mm telescope pipe.

Typical applications are service stations, industrial buildings, heavy vehicle car parks, public roads.