MainStays 3.5-inch Room Darkening Vertical Blinds are made of durable metal headrails. Features 3.5-inch room darkening louvers, easy to use wand control, and self-aligning louver rotation system. MainStays 3.5-inch Room Darkening Vertical Blinds include all the necessary mounting hardware and simple installation instructions. Blinds can be mounted inside or outside of window or doorframe. MainStays 3.5-inch Room Darkening Vertical Blinds are easy to clean with a soft cloth, a dusting mitt or the round brush attachment from a vacuum cleaner.