Installation Notes: This product includes hooks and seamless double-sided adhesive. 1. First cut the seamless double-sided adhesive with scissors, then stick it with the hook, select the appropriate position of the wall, then press the hooks on the wall for 10 seconds, then hang the metal hole on the hook.The installation sequence is from right to left, from top to bottom. You don’t need to worry about wrinkles and like a web shape after installtion. There is no wrinkle on the surface of the screen ,the black side of the screen is straight and the entire screen becomes a complete rectangular shape after installation ! How to remove stains? This product can be washed by hand or machine , or directly clean the dirty parts and dry it, then we can use them again! It is so convenient to clean them that we can say goodbye to stains from now on .Specification: Format: 16:9 HD , Size: 150 inch , Viewing Size: 104" x 58" , Support: 165 viewing angle , 1080P Full HD, Front Projector , Rear Projector . Suitable for: Home Theater , Office, Business Meetings, Propose Marriage , Exhibitions ,Conventions , Presentations , Education. Package List: seamless hooks x 20 , seamless double-sided adhesive x 24, 150 inch projector screen Packaging bag x 1,Ropes x 2 packs! easy to set up !