Can I install Schluter®-KERDI-DRAIN-F in a shower application?

It is not recommended. The KERDI-DRAIN-F is designed for floor applications and to be used with Schluter uncoupling membranes. The drain is not designed to fit into the Schluter®-KERDI-SHOWER-T/-TS/-TT shower trays and will require additional preparation to fit into a shower application.