Inside Mount ONLY. For better internal installation, a standard 3/8 inch deduction is made to the shade width. The actual blind size is 34 5/8" W x 64" H, the metal brackets at both ends can extend 1 inch in total, allow the blind to fit for window width 34.7-35.7 inch. (Pls Note) Minimum 1 1/2" depth of window frame required for inside mount. No Drill Blinds: LazBlinds patented technology No Tools-No Drill system allow it no need to drill any holes on your window frame, great for Renter, Landlord, and Home Buyer. Easy to Install in 30 seconds. Light Filtering: Blinds are made of 100% natural bamboo materials, small gaps between each flat slat are normal and help gently filter light for a unique, soft glow in a natural wa, perfect for living room, dining room, office. Cordless Blinds for Windows: The cord-free design 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. Easy to Install. (Pls Note) Since the material is dyed from natural bamboo, slight color variations between batches are inevitable and unavoidable. Actual item may also slightly vary in color from what you expected due to different monitors. Please understand the color difference and bamboo joint on the blinds because of the nature material. Any questions pls feel free to contact us for help, we will get back to you within 24 hours.