Prisma P outlet grille plastic. 92 x 92 mm cut-out. External is 137 x 117 mm. Thermal management accessory. Compatible with ClimaSys CV fan. Fixing mode by screws or clipped. Injected thermoplastic (ASA PC). Grey RAL 7035 external part. 1 x G2 M1 synthetic standard filter( rear of outlet grille) incl. IP54 Protection.