Field Notes Gas Dryer Make-Up Air: How to Interlock a Motorized Damper So the Dryer Only Runs When It Is Open combustion airOct 02, 2026 Get Field Notes by Email One practical article a week on damper wiring, sizing and code, written for contractors by the team that builds Hoyme dampers. Your email SubscribeFree. Unsubscribe any time. Follow us