Abstract: The replaceable foundation vent has a mounting frame and a plurality of vent components, including a screen, ventilation plate, and a slider. The ventilation components are removably attachable to the mounting frame using fasteners. The mounting frame has a built in lintel, the entire frame being adapted for permanent mounting in an opening in a block, brick or frame foundation wall. Overhanging portions of the frame lintel rest atop foundation wall members laterally disposed on either side of the frame. Additional foundation wall members can be disposed on top of the lintel to seal off the initial top opening. By releasing/removing the fasteners, the vent components can easily be removed from the mounting frame for repairs to the vent when necessary.