Abstract: The present spools are shaped as flared cylinders. In one embodiment, the spools have a minimum circumference at a center, and maximum circumferences at outer portions thereof. In another embodiment, the spools flare from a maximum diameter adjacent a first side wall to a minimum diameter adjacent a second side wall. In another embodiment, the spools taper from large diameters adjacent first and second side walls to a minimum diameter at a point between the side walls, wherein the point is offset from a midpoint between the side walls. In another embodiment, the spools are subdivided by at least one partition.

Abstract: Spools for horizontal blinds are provided. The spools are shaped as flared cylinders, with a minimum circumference at a center, and maximum circumferences at outer portions thereof.