Function: Compatible with most manual or spectrum projector screen on the market and suitable for home, office, classroom and other places. Support maximum loading weight up to 80lbs. Environment: Securely mount to wood stud, drywall with anchors (Anchor included), brick or concrete walls. Adjustment: Move the mounting hooks along the 6 inch bracket to optimize the placement of your projector screen and we provide all the necessary hardware to get your screen up and hanging. Not easy to fall off and safer: Our brand uses carabiner to install the movie screen, which can prevent the screen from falling off, which is safer and more beautiful Package Includes: Projector Screen 6 L-Brackets (Black) x 2, Snap Links x 2, Eyebolts x 2, Wing Nuts x 2, Nut x 2, Washers x 4, Screws x 4 and Self-Tap Drywall Anchors x 4, User Manual.