ClimaSys CV axial motor fan. 115V 50Hz or 60Hz. Free flow with standard filter of 944 m3/h at 50 Hz and 983 m3/h at 60 Hz. Cut-out dimensions of 291 x 291 mm. Outlet grille in injected thermoplastic (ASA PC), grey RAL 7035. Connection terminals via cable. 2 protection grilles on the front and rear. Protection class IP54.