Generic photo used for illustration purposes only.
WS51A-L is a WR-51 waveguide straight section with MIL3922/70 square cover flange. This waveguide straight covers the frequency range of 14.5-22.0 GHz. RF ONE offers a complete line of waveguide straight sections covering the waveguide sizes WR3 to WR1150.
For model WS51A-L, replace the "L" with the desired length.