Waveguides from Fairview Microwave consist of coaxial adapters, bandpass filters, bends, flexible waveguide cables, waveguide gain horns, sections and terminations. Fairview waveguides are available in standard sizes from WR-430 through WR-15 depending on type of waveguide product, which encompasses frequencies from 1.7 GHz to 75 GHz.With regards to a waveguide size, the term “WR-xxx” stands for “Waveguide Rectangular”; the number indicates the inner width dimension of the waveguide in hundredths of an inch. Our line of waveguides are constructed with aluminum bodies for its lightweight characteristics. We carry both waveguide coaxial adapters, band pass filters, bends, flexible waveguide cables, waveguide gain horns, waveguide sections and terminations with square or rectangular flanges.