Chief's MAC-400 adapter is designed for flat panel mounts with our patented 8" x 8" (20.3 x 20.3 cm) Q-Latch™ Flat Panel Mount System and provides the ability to rotate medium flat panel screens from landscape to portrait orientation. Rotates from landscape to portrait (90 degrees clockwise or counter-clockwise) with little effort (no tools necessary); provides 2 degrees of over-travel for easy leveling of screen and ultra smooth fingertip control. Bracket adds 6 lbs/2.7 kg and .94"/24 mm...