MAC400 Chief"s MAC-400 is the ideal accessory for projects that need a medium flat panel to easily rotate from landscape to portrait. The MAC-400 easily installs into Chief"s patented 8" x 8" Q-LatchTM Mounting System and provides ultra smooth fingertip control. Rotates from landscape to portrait (90 degrees clockwise or counterclockwise) with little effort and no tools necessary and has 2 degrees of over-travel for easy leveling of screen. Cable management holes on front plate prevent binding or damaging of cables. Bracket adds 6 lbs. and adds only .94" depth to installation (be sure additional weight does not extend wall or ceiling mount weight capacity). The MAC 400 works with any of Chief"s mounts which use a MSB bracket. Chief warrants its products (excluding electric, gas cylinder, and one-way bearing mechanisms) to be free of defects in material and workmanship for 10 years. PLEASE NOTE: This item cannot be shipped to Puerto Rico