20 x Rena Filstar xP Poly Filter Pads for XP1, XP2, XP3, XP4.
You are purchasing 20 x compatible poly filter pads to fit the RENA filtstar xP range of external filters (XP1, XP2, XP3 and XP4). 20 x Rena Filstar xP Poly Filter Pads and 6 x Carbon for XP1, XP2, XP3, XP4.