550/50-series 3366021-N is a rounded blind cover for floating, rounded frame 3366020-N, squared frame 3366019-N and kita jaw frame 3366018-N. The cover is designed for Nordic conditions, in accordance with standard EN 124-2:2015, manufactured from grey iron EN-GJL-200 and is classified under Load Class D400.

Cover can be opened using magnet lifter CW1600.

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