Cool bulkhead pass-through fitting from EKWB, which makes hose handling through the materials easier.
Bulkhead fittings can also be used as fill port, this simply requires a blanking port to seal off at the ohter end.
Convenient bulkhead with universal 1/4" BSPP (G 1/4") threads if you will lead the hoses through the cabinet, a wall or something.
Threading: 2 x G 1/4" (Female - Female)
Thread length: 14mm