Elitescreens Standard(1:1) Manual B Series Projection Screen (100 1:1 AR) M100S Screen Material: MaxWhite Feature: Dual wall and ceiling installation design Auto-locking system at 2 intervals provides variable height settings MaxWhite screen material is durable and easy to clean 160 degree wide viewing angle for commercial presentations or residential home cinema Screen lanyard for easy operation included - allows screen's pull down handle to be reached from high areas Black backed screen material eliminates light penetration for superior color reproduction 100 diagonal sizes in 1:1 aspect ratio Mounting Kit Included (2 Screws x 2, Dry wall anchor x 2, U Bolt x 2, Hex nuts x 8) Optional 6, 12, and 18 L brackets available