Manufactured in the Europa variant with a hinge or hinge and pin or the Standard variant in load classes C250 or D400 or E600. The rib design can be concave, straight, narrow-gap or multi-directional. You can choose between variants with and without locks. It is possible to fit a sludge basket with concrete/cast-iron frames with a height of 160 mm, or cast-iron ones with a height of 100 mm.