Abstract: A cover for vertical louver blinds is disclosed. The louver cover consists of an oblong piece of material which is folded lengthwise into front and back panels of sufficient length and width to cover a vertical louver, for example. The panels are joined along their two outer edges to form a sleeve to substantially enclose the vertical louver. The junction along the outer side edge has an unjoined zone near the bottom edge through which a louver or weight is inserted and chains can pass. The top edges of the front and back panels have joined portions and an unjoined portion. The joined top portions support the cover on the louver and the unjoined top portion permits passage of the means for hanging the vertical louver. The bottom edges of the front and back panels are also joined. This cover alone can also serve as a louver by inserting a slotted cross-bar in the top of the cover and a weight in the bottom of the cover.