Maximum Extension: 18", as measured from back of the tank to lamp
The AP9X Mounting Arm Extended Slide Bar extends the reach of the AP9 mounting arm by up to 8” (18" total distance from the back of the tank to the lamp). This accessory allows users with wider tanks (up to 36”) to mount their AP9 exactly where they want to. Easy installation and sturdy construction make the AP9 Mounting Arm Extended Slide Bar a great accessory for any large tank owner.