Abstract: A basement wall drain unit that extends around the periphery of a basement next to the wall for draining away any potentially damaging moisture. The drain fits securely to a foundation wall before a concrete floor is poured in a basement. The drain further has a removable cap. The cap being removed after the concrete floor has been poured and hardened. The cap is for preventing wet concrete from filling the drain during installation of the basement floor or the like. Another feature of the invention is to provide a device and method that have spaced apart drainage holes in a channel for draining water from the basement area to a location under the basement floor.