Generic photo used for illustration purposes only.
WS3-L is a WR-3 waveguide straight section with UG-387/U Mod round cover flange. This waveguide straight covers the frequency range of 217-330 GHz. RF ONE offers a complete line of waveguide straight sections covering the waveguide sizes WR3 to WR1150.
For model WS3-L, replace the "L" with the desired length.