HEAD-APW439-2.5-10-DF In and Out = Noryl In/Out Head, 1" ports x 1.050" distributor for Downflow.
Include both the tank o-ring and the distributor o-ring.
Does not include the option Upper Distributor "Basket" ( our PN MD1206, cross reference TDB1050 ).
Other versions are:
HEAD-APW434-2.5-07-DF ( 3/4" ports, and Downflow )
HEAD-APW439-2.5-10-DF ( 1" ports, and Downflow )
HEAD-APW434-2.5-07-UF ( 3/4" ports, and Upflow )