More Help filter."Nominal" refers back to the product sizing chart that fits into your intake vent. "Genuine" measurement refers back to the true measurements useful source of your air filter dimensions, that may be a little bit more compact when compared to the intake vent dimensions.A credit history in the quantity of your air filter obtain up to $thirty will be placed on your dryer vent cleansing invoice. Available to Southeast Florida inhabitants only.Filterbuy supplies a wide array of air filter dimensions, thicknesses, and MERV ratings so you can find dependable aftermarket air filters for household use as well as professional or industrial programs.Air filters, furnace filters and AC filters are similar products and the phrases are made use of interchangeably. Except for dimension variations, the air filter that goes in the central HVAC unit or your return vents known as an “AC filter” or maybe “air filter,” and filters that go your furnace unit in your home are referred to as “furnace filters.”