This actual blind is 1/2 " (1.27 cm) narrower/smaller than stated size. This blind will fit windows 3/8" (0.95 cm) smaller and 1/2" (1.27 cm) wider than stated size. No Cords to Tangle! Child & Pet Safe! Specially formulated to minimize dust To Operate: Simply Lift or Lower Bottom Rail to Raise or Lower Blind Includes tilt wand to adjust slats & control how much sunlight streams into your room Mounting brackets are designed for inside, outside or ceiling installation The blind can easily be shortened by following the simple instructions. All hardware and installation instructions are included. This blind will fit windows 3/8" (0.95 cm) smaller and 1/2" (1.27 cm) wider than stated size. This actual blind is 1/2 " (1.27 cm) narrower/smaller than stated size. Actual Slat size is 1"