A folded short in parallel-plate waveguide is investigated using the Fourier transform and the mode-matching. A fast-converging series solution for scattering from the folded short is obtained and its characteristics are presented. Our solution for the E-plane short agrees well with measurement and is numerically more efficient than the existing moment-method solution. The presented scattering characteristics are useful for the design of the E- and H-plane shorts in rectangular waveguide.