800-series set 3366177-N consists of a floating, round frame 3366178-N and a lockable, round grating 3366180-N. The set is designed for Nordic conditions, in accordance with standard EN 124-2:2015, manufactured from ductile iron EN-GJS-500/7 and is classified under Load Class D400.

Cover can be opened using opening tool.

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