NRG side mounting booms allow you to easily mount sensors to your tower or mast at any height. Mounting hardware is included. Heavy Duty mounting booms are designed specifically for icing environments and mounting NRG IceFreeII sensors. Features Heavy-duty steel pipe for use in icing environments. Mounts to NRG TallTowers up to 254 mm (10 inches) diameter with universal mounting plate and u-bolts (included). Boom diameter allows for direct connection to base of IceFreeII heated sensors.