Instahibit 100" Diagonal 1:1 Manual Pull Down Square Projection Screen 70"x70" Foldable Tripod Stand Instahibit&trade; 100" Diagonal 1:1 Manual Pull Down Square Projection Screen w/ Foldable Tripod Stand Self-locked system provides variable height settings, reliable tripod to adjust height and housing position Matte white viewing surface diffuses projected light uniformly 4-side black masking borders increase picture focus & contrast Black-backed screen material eliminates light penetration