For blinds mounted inside the window opening (See Pictures). Will not work on blinds mounted outside of the window opening. See Outside Mount NoNo Brackets for comparison. The NoNo Bracket is a specially engineered bracket that allows you to easily hang curtains and dramatically change the look of any room. The bracket attaches to your existing blind head rail with ease. Attach to inside mount vertical or mini blinds up to a 1.25 inch headrail. Fits up to a 1 inch curtain rod. No Drilling. No Hammering. No Screws or Holes in the wall. Instructions - Important: Ensure your existing blind head rail is securely fastened to the wall. Do not install if head rail is lose or damaged. For 1.25" Blind Head rail 1. Remove Valance if present. 2. Adjust the center screw as necessary to ensure a snug fit to the head rail. 3. Slide bracket into head rail and hang curtains as normal.For Mini Blinds: 1. Remove center screw 2. Remove black plastic washer 3. Replace screw 4. Install bracket and hang curtains as normal.