When the "acoustic mesh" is metallic, it often serves as a necessary electrostatic shield for the capsule. Some people who "hot-rod" (custom modify) professional microphones like to remove one or more layers of screening because they imagine that to do so will "open up" the high frequency response of the capsule. The intuitive image is a strong one, but things don't work quite that way in most of the range of a pressure gradient capsule--and such modifications can make the microphone very sensitive to radio frequency interference. So in case that was the motive behind these questions, please be careful, and have a "plan B" for when your "plan A" has unexpected results.
--best regards