The Fairview Microwave FMWAD5018 is a WR-137 rectangular waveguide bulkhead adapters operating within the C Band frequency range of 5.85 GHz to 8.2 GHz. The WR-137 bulkhead adapters are used for waveguide interface in panel mount equipment or pressurized test chamber. A hole is made in the panel wall or bulkhead and the adapter is mounted to the panel with screws and a backing ring that is complete with Neoprene gasket (both included). Once securely mounted, waveguides with a Round Cover UG-344/U flange can be attached to the adapter on both sides of the bulkhead feedthough to allow a signal path through the panel. This Fairview Microwave series of rectangular waveguide bulkhead feedthrough adapters are offered to cover frequency range of 5.85 GHz to 50 GHz in 9 waveguide bands and are ready to ship same day.