[. . . ] QUALITY FEATURES FOR BETTER PICTURES, EASIER OPERATION, LONGER LIFE DA-LITE IS MORE THAN PROJECTION SCREENS · Da-Lite Tripod, Wall and Ceiling and Electric Screens Steel Saddle for Wrinkle-Free Picture Surface The POWER In PRESENTATION PRODUCTS · Camlok® Metal Roller System · Automatic Fabric Lock · Self-Locking Extension Tube · Extra Heavy Duty Tripod Assembly · Heavy Gauge Aluminum Legs Support Extra Strong Center and Extension Tubes · Exclusive Custom Recessed Keystone Eliminator · Flat Back No-Rub Octagon Case · High Impact Plastic End Caps · Wide Range Height Adjustment · Tension Lever Lock for Position Adjustment Da-Lite Mounting Systems HEAVY DUTY CARRYING CASE (OPTIONAL) Will protect the screen's finish. [. . . ] Place tip of middle finger of right hand in depression beneath leg bracket. Lift leg bracket sharply, at the same time applying a slight lift to entire unit with left hand. Note that legs are closed and locked, hanger, and extension tube and case are locked and surface is locked to provide for safe and comfortable carrying and storing. 1. Raise extension tube to first position, and then swing case to horizontal position. If Keystone Eliminator is to be used, (1) simply grasp the knurled tip which protrudes slightly above the hanger; (2) pull straight up; (3) then lay in a horizontal position over the hanger, and place the pull bail on it. Holding extension tube with one hand and releasing Black Locking Knob with other, raise extension tube to desired position. [. . . ] Use caution in tensioning screen surface when using Keystone Eliminator. [. . . ]