check these guys out article."Nominal" refers to try this web-site the product sizing chart that fits into your intake vent. "True" size refers back to the accurate measurements of your air filter dimensions, which can be somewhat scaled-down as opposed to intake vent Proportions.A credit score in the quantity of your air filter order around $30 is going to be placed on your dryer vent cleaning Bill. Accessible to Southeast Florida inhabitants only.This email address you entered isn't inside our system. Please sign up to create an account or enter another email handle.Air filters, furnace filters and AC filters are comparable products as well as terms are utilised interchangeably. In addition to measurement distinctions, the air filter that goes during the central HVAC unit or your return vents known as an “AC filter” or just “air filter,” and filters that go your furnace unit in your home are termed “furnace filters.”