<ul class="productmiaoshu"><li><span class="a-list-item"> SCREEN MATERIAL: MaxWhite 2. 8K/4K Ultra HD and Active 3D Ready. FRONT Projection Screen Material. Featuring a 180° Viewing Angle and 1.1 Gain. Fully Black Backed. GreenGuard and GreenGuard GOLD Certified. Compatible with Standard UHD/HD projectors </span></li><li><span class="a-list-item"> 125 INCH Diagonal, 1:1 Aspect Ratio. Product dimensions | 88.6” W x 88.6” H View Size – 95.5” W x 98.0” H. Overall size| </span></li><li><span class="a-list-item"> Features a 2&#34; interval Auto-lock Mechanism that allows for various height settings and a screen lanyard for easy pull down </span></li><li><span class="a-list-item"> Fast and easy installation. Optional 6&#34; and 12&#34; L brackets available. </span></li><li><span class="a-list-item"> 2-Year / 3-Year ENR-G Manufactures by Elite Screens&#39; an ISO9001 manufacturer since 2004 and Lifetime Tech Support by Email Web Chat or Toll Free Phone Call by Elite&#39;s Professional Service Team </span></li></ul>