A two-dimensional mathematical model for estimating the scattering of plane acoustic waves from an infinite, uniform, plane grating of compliant, elliptically, cylindric shells is developed. Calculations from the model are found to be in good agreement with insertion loss measurements of experimental arrays. The array is shown to be analogous to a multituned acoustic-band rejection filter that has the shell’s fundamental flexural mode in the array for its center frequency. Low-frequency approximations are also included. Conditions for an ultrawide resonance bandwidth having very high array resonance reflectivity are considered and an alternative application for compliant tube gratings, as an acoustic window that provides mechanical shading for a sonar receiving array, is discussed.