Kessil`s Mounting Arm (Part # KSAGN02) is a premium mounting option that allows you to install Kessil Aquarium Lights directly to your tank. The Mounting Arm is adjustable in height and from back to front (for 18" - 24" wide tank), together with advanced cable management to house the cable inside the arm, providing a perfect and sleek mounting option for rimmed and rimless tanks.