AFB Bronze MERV 6 12x24x1 Pleated AC Furnace Air Filter. Pack of 4 Filters. 100% produced in the USA. 12x24x1 pleated ac furnace air filters. Perfect for home or business use. Each purchase is for a pack of 4 filters that can replace any standand furnace or air conditioning filter. Note the actual dimensions of this filter are 11 3/8 x 23 3/8 x 3/4". MERV rating of 6. Basic pleat that filters pollen, mold, and dust. AFB is a leading manufacturer of air filters, made in a US factory using 100% US components and shipped direct to your door. AirFilterBuy: Breathe Better!