The two towers pictured are 328-foot self-supporting towers owned by American Tower on West Tiger Mountain east of Seattle, Washington. The towers were manufactured and erected by ERI in 1999. The tower on the left includes a T-Bar that supports two UHF television antennas. The tower on the right now supports a new ERI LAMBDA® Optimized FM Mounting System that is 135-feet tall. The FM antenna is a 16-Bay AXIOM® Master FM Antenna that is fed by two 6-1/8-inch, 50-ohm, rigid transmission lines. The antenna is the primary FM antenna for six Seattle FM stations.