Channel Master CM-3080 mounting kit

12' FT Antenna Chimney Mount 1 Pair Channel Master CM 3080 is used to secure a TV antenna mast to a chimney. Two brackets are included to anchor the mast at two different points, as far apart as the chimney will allow. The CM 3080s brackets will accommodate TV antenna masts with an outer diameter up to 1-1/2 inches. The center of the TV antenna mast is held 3.8 inches from the chimney. Two 12 foot metal straps are included. Channel Master recommends using guy wire for all antenna installations using masts over 10 feet.