Ruud Airflow Properties and Duct Design Course Written by Matt on December 22, 2022. When 22/12/2022 8:00 am - 4:00 pm Add To Calendar Download ICS Google Calendar iCalendar Office 365 Outlook Live Please call 503-353-0100 for additional class details, or to RSVP for the class. Due to attendance limitations, RSVP’s are required for attendance. Previous Next