Feature●NON-PENETRATING ROOF MOUNT FOR SATELLITE DISHES, WIRELESS INTERNET ANTENNAS, ETC●STEEL CONSTRUCTION. 35" X 28" BASE USES STANDARD CONCRETE BLOCKS TO ANCHOR TO ROOF●FEATURES 2.25" x 50" LONG MAST. 18 GAUGE, CLEAR COAT ZINC COATED●Made in the USA●*** Professional installation is always recommended to determine ballast and roof integrity ***Description Non-penetrating roof mount for satellite dishes, wireless internet antennas, weather stations, and more.