https://www.se.com/au/en/product/NSYCAF291/standard-filter-g2-climasys-for-outlet-grille-or-fan-cutout-291x291mm-ext-dim-336x316x18mm/
NSYCAF291 - Standard filter G2, ClimaSys, for outlet grille or fan cut-out 291x291mm ext. dim...
Schneider Electric Australia. NSYCAF291 - Standard filter G2, ClimaSys, for outlet grille or fan cut-out 291x291mm ext. dim 336x316x18mm.