Abstract: A system and method for providing a deck drain vent system is disclosed. The deck drain vent system includes at least one panel disposed below a lower surface of a deck. The panel is substantially planar and has a bottom side and a top side facing and spaced apart from the lower surface. At least one vent penetrates the panel to allow fluid communication between the cavity and the bottom side. The deck drain vent system further includes a shaft lock secured to the vent. The shaft lock hinders liquids and debris from entering the vent, yet allows air to freely circulate between the cavity and a surrounding atmosphere.