EZ NP-60-200 Non-Penetrating Roof Mount with 2" x 53" Mast Bundle with ROHN FRMMAT Rubber Roof Mat NON-PENETRATING ROOF MOUNT BUNDLE FOR SATELLITE DISHES, WIRELESS INTERNET ANTENNAS, ETC USES STANDARD CONCRETE BLOCKS TO ANCHOR TO ROOF STEEL CONSTRUCTION. 35" X 35" BASE. FEATURES 2" X 53" X 18 GAUGE GALVANIZED MAST INCLUDES ROHN FRMMAT RUBBER ROOF MAT. DIMENSIONS: 1/8" THICK x 42" x 36". SERVES AS PROTECTIVE LAYER BETWEEN THE ROOF AND THE MOUNT. PLACE UNDERNEATH THE MOUNT'S FRAME TO PROTECT THE ROOF FROM THE FRAME RAILS.