WHAT SIZE TO ORDER: This blind will be exactly 22.5 inches wide to ensure the perfect fit inside a window frame that is 23 inches wide. All Lumino blinds are precision-cut to be oe" narrower than the ordered width, providing the ideal inside mount. Please measure carefully ? see image with instructions to ensure the optimal fit. The sizes listed are WIDTH x HEIGHT. CUSTOMIZED IN THE USA: To ensure the perfect fit and a high-end look, Lumino cuts your blind to the exact size, right here in the USA. Unlike standard blinds that may come close, we ensure a perfect fit every time, so you won't need to compromise on size. Order confidently with Lumino for all your windows and experience a seamless, cohesive look throughout your home. ROOM DARKENING PRIVACY: Lumino's Room Darkening Mini Blinds filter more light than standard light filtering shades. Quality materials make for a thicker slat which allows less light to pass through it, ensuring more privacy when needed. CORDLESS MINI BLINDS: All of Lumino's blinds are cordless and "Certified Best for Kids" ensuring a safe environment for kids pets. These Vinyl Mini Blinds can be inside or outside mounted on any window and are water moisture resistant, creating a dynamic mini blind for any room.