What Guidelines are missing? Tell us by completing this form: What Function or Facility Type Needs a New Best Practices Guideline?*Please submit an idea for an operation, process, function, facility and anywhere else an air filter can be used and might require our members' expertise. NAFA's Guidelines Committee will review and consider.Name* First Last Please enter your nameEmail* Enter Email Confirm Email Please enter your email. The Guidelines Committee may be interested in following up with you on your submission.PhonePlease enter your phone number. The Guidelines Committee may be interested in following up with you on your submission.CAPTCHAConsent I agree to the privacy policy.