US Patent 10373810 Showerhead having an extended detachable gas distribution plate

Embodiments of showerheads having a detachable gas distribution plate are provided herein. In some embodiments, a showerhead for use in a semiconductor processing chamber may include a body having a first side and a second side; a gas distribution plate disposed proximate the second side of the body and having an annular channel formed in a side surface; and a clamp disposed about a peripheral edge of the gas distribution plate to removably couple the gas distribution plate to the body, wherein the clamp includes a body and a protrusion extending radially inward into the annular groove, and wherein a portion of the gas distribution plate extends over a bottom surface of the clamp.