Carbon filters won't do spit unless they contain ten pounds of carbon or more. Mine uses 40 lb cartridges, and it will eliminate all evidence of a 4 hour poker game with chain smokers, in about 24 hours. The 1/4" thick ones for your AC? Save your money.
Tip: You can't get any effective air filters from a big box store.
Tip: You can't get any effective air filters from a big box store.