Profiled strip and method of forming a separating assembly

A method of forming an honeycomb-shaped assembly comprising a plurality of profiled strips, the method comprising:

• providing a plurality of profiled strips, each of the plurality of profiled strips comprises,
• two base sides extending longitudinally and positioned at an obtuse angle relative to each other to form a trough-shaped configuration, wherein each of the two base sides comprises an inner projecting flange and an outer projecting flange that are spaced apart from each other, wherein one of the inner projecting flange and outer projecting flange comprises an undercut groove;
• and
• two connecting sides each extending along a plane from one of the two base sides and each comprising at least one free end including a projection extending approximately along the plane of a corresponding connecting side, wherein each of the two connecting sides is positioned at an obtuse angle relative to a corresponding base side;
• and
• stacking the plurality of profiled strips to form a honeycomb configuration by inserting the projection of a connecting side of one of the plurality of profiled strips into the groove of a base side of another of the plurality of profiled strips, wherein at least a portion of the projection is received by the undercut groove in an interlocking manner.