WoodPlus blinds are a durable alternative to real wood. The slats are made of high-tech materials, meaning that they will not warp under humid conditions. A crash-proof cord lock protects your window sills and allows the slats to stack more compactly when fully raised. Bali's low-profile headrail is only 1 5/8" high, and its unique design eliminates light leakage at the top of the blind. A decorative valance is included at no charge. Wood Plus blinds are easy to clean with soap and water, and are backed by Bali's Limited Lifetime warranty.