A Venetian blind has horizontal slats, one above another. Venetian blinds are basic slatted blinds made of metal or wooden slats.
They are suspended by strips of cloth called tapes, or by cords, by which all slats in unison can be rotated through nearly 180 degrees. The slats can be rotated such that they overlap with one side facing inward the other side facing outward. Between those extremes, various degrees of separation may be effected between the slats by varying the rotation.
When the lift cords passing through slots in each slat are pulled, the bottom of the blind moves upward, causing the lowest slats to press the underside of the next highest slat as the blind is raised.