Here are some common accessories that could be used for the filters, although for most households it is usually not required. 

Adaptors and flexible hoses that could be used for shower filters:

short-flexi-pipe

Flexible hoses comes in different lengths and could be used with Line Shower Filters. We have customers whose water outlet is on the wall and thus needs flexible hoses to connect to the wall outlet in the bathroom then to the hose filter then their own shower head. For those who are using instant heater,with the water outlet from the bottom of the heater, there is usually no issue to connect the Line Shower Filter.