Abstract: A down spout clean out adapter (10) connectable to a bottom distal end of a leader (18). The down spout clean out adapter (10) having an adapter (12) which has an adapter upper front (12UF) having an adapter upper front opening (12UFA) and an adapter upper left (12UL) having an adapter left guide and an adapter upper right (12UR) having an adapter right guide and an adapter upper back (12UB). The down spout clean out adapter (10) further has a door (16) which has a door top (16T) and a door front (16F) and a door back (16B) and a door bottom (16A) and a door left (16L) and a door right (16R). The door (16) is removably positionable between the adapter left guide and the adapter right guide.

Abstract: A subsurface drainage pipe includes a tubular main pipe body having inner and outer surfaces and a longitudinal central axis. Walls defining a plurality of slot-shaped apertures through the inner and outer surfaces along the length of the main pipe body are provided. The slot shaped apertures are angled with respect to the central axis.