No Drill Blinds: No Tools-No Drill system allow it no need to drill any holes on your window frame and walls, great for Renter, Landlord, and Home Buyer. Easy to Install in 30 seconds with no tools-no drill, screws, or brackets. And it can afford maximum 30kg. Fit All Kinds of Walls, like woodiness metope, tile marble, concrete wall and rough tile. Cord-free Design: The cordless shades provides a clean, tangle-free look to the window and creates a safer environment for children and pets. Easy to raise up or lower down to gently filter sunlight. Sound & Heat Insulation: The unique honeycomb structure creates air pockets to insulate your home against outside thermal energy in summer and keeps outside cold away from your warm house in winter by trapping air in the cells. It also works well in noise reduction and privacy protection, so as to provide you with a comfortable space. REAL Blackout Shades: The silver-plated layer inside the cell can completely keep out the sunlight and uv ray. Offering a real dark environment, bringing you a good night's sleep during the day. Perfect for bedroom, media-room & office. About Measurement: For Inside Mount (No Drill No Tools Needed). For better internal installation, a standard 2/5 inch deduction is made to the shade width. For example if you order a 40" W x 64" H, the actual blind size you get is 39 3/5" W x 64" H, the unique spring rod can extend 1 inch in total, allow the blind to fit for window width 39.7-40.6 inch, blind height can adjust from 0" to 64". (Pls Note) Minimum 1 1/5" depth of window frame required for inside mount. FabuBlinds - we have been committed to creating a comfortable home environment through our fabulous shades. The "No-Drill & No-Tools" series shades are easy to install and disasemble and they keep your wall out of damages and holes. -EASY INSTALLATION: Only 3 steps to install; -EASY TO DISASEMBLE: it is very convenient to take off for clean, and suitable for renters to take away at any time; -NO DAMAGE TO WALL: there is no need to punch holes