SMART-LIFT Automated Projector Lift (120V) The SL151 provides exceptionally smooth and quiet movement and is a great option for suspended and finished ceilings in homes and corporate offices. (120V) Features - Precise positioning including vertical projector cradle adjustment and fore/aft projector positioning - Quick connect/disconnect for convenient lamp and filter access on most projectors - Maintains registration even when disconnected - Independent roll, pitch and yaw - Low profile, requires minimal clearance above the ceiling - Easy installation, the drop-in design fits into a 2' x 2' suspended ceiling - Multiple installation options: three 0.38" (10 mm) threaded rods, 1.5" NPT threaded extension column with SMA602 accessory, or side mount with built-in joist tabs - UL Listed