The 70 x 70" Versatol Tripod Projection Screen from Dalite is a simple 18 gauge steel screen that is suitable for all venues - home, business and education. The legs lock automatically when set up and are released by a simple button push. It is activated by an easy to access pull tab that raises and lowers the screen with ease. The screen surface is seamless and flame retardant as well as being mildew resistant, assuring years of trouble free use.