Exclusive Microtek high efficiency charcoal filter designed to provide the longest life possible and keeps your range hood operating at peak performance. The duct-free charcoal filter traps airborne particles before air is recirculated back into kitchen. For model No. 11000, 41000, F40000, 46000, NP, NW, and NY series range hoods. 10-1/2" x 8-3/4". 1 filter per blister pack.