Drain Bottom Fitting - 1/2" (13mm)
Drain Bottom Fitting - 1/2" (13mm) at HorticultureSource.com -
removable protective screen 1/2" nipple inside to attach a 1/2" hose 3/4" and 1" overflow drains overflow drain comes with a detachable 4" high overflow riser watertight gasket included on all drain kits.