MODEL | DP3084MWL * 84" Diagonal 4:3 Pull-Up Screen * Light weight portable design * Intelligent Interlock (Safety) * Level Adjustment Feet This unique, portable screen is easy to use and very stable with its high quality casing. The Optoma MWL Pull Up is an ideal screen for travelling, whether it’s from room to room or around the country. Optoma MWL screens are available in both business presentation (4:3 ratio) and home cinema (16:9 ratio) formats. These screens are ideal for rental companies when mounting a screen to a wall or ceiling is impractical. In use, two support legs, which are otherwise conveniently hidden from view, slide out from under the casing. These legs come with height adjustable floor stands for use on uneven surfaces. For additional vertical stability, the support bar comes with an additional height adjustable floor stand. Intelligent Interlock The design of the intelligent interlock ensures that the screen is fully secure in use and during transport. When the support bar is lifted, the case automatically unlocks, allowing the screen to be pulled up. When the screen is retracted, the case will automatically be locked. This innovative safety feature is easy to use and standard on all sizes. One-Way Interlock The patented one-way lock allows the back support to be fully secured and easily adjustable. A multi-purpose handle is not only used for raising and retracting the screen, but for securing it to the support bar too, preventing the screen from falling or shifting positions. Level Adjustment Knob During use, two support legs which are otherwise hidden conveniently slide out from under the casing. The support legs come with height adjustable floor stands for use on uneven surfaces. For additional vertical stability, the support bar comes with an additional height adjustable floor stand.