Faired flat blade (1) for wiper, in particular for a vehicle, characterized in that it comprises: a longitudinal wiper blade (8), at least one longitudinal vertebra (6) for stiffening, a longitudinal member ( 7) for maintaining said wiper blade and said stiffening vertebra, a longitudinal fairing (2, 3) comprising two end covers (3) and a central frame (2) extending between the end covers and being connected to the latter, the frame comprising means for fixing to said stiffening vertebra or to said member for retaining this vertebra, and each cover comprising means for guiding in translation end portions of said member.
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