Find the Perfect Fit: Blinds will fit windows 3/8″ (0.95 cm) smaller and 1/2″ (1.27 cm) wider than stated size. Actual blind is 1/2 ” (1.27 cm) narrower than stated size. Actual slat size is 1″. Cordless Blinds: Filter out light with the Cordless Light Filtering Mini Blinds.