Hoyme HAC Motorized Round Inline Duct Damper | 24V Spring Return | Power Open | 4 Inch | CSA Certified
by Hoyme
- NO DUCT MODIFICATION REQUIRED — Slides inline between existing round duct sections in minutes; fits any standard 2 to 9 inch galvanized duct without cutting, welding, or special tools, CSA CERTIFIED FOR FRESH AIR INTAKE, MAKEUP AIR, ZONE CONTROL AND VENTILATION — Meets CSA requirements for code-driven residential and light commercial duct applications across Canada and USA, SPRING RETURN ACTUATOR CLOSES AUTOMATICALLY ON POWER LOSS — 24 Vac on/off actuator with patented Hoyme spring motor drive; nylon bearings; no manual reset needed if power is cut, CONTROLS FRESH AIR, MAKEUP AIR, AND ZONE AIRFLOW — Reduces unwanted airflow when a zone or intake is off; compatible with residential ventilation code for fresh air intake and makeup air applications, MADE IN CANADA BY HOYME MANUFACTURING — Designed and built in Canada to North American HVAC standards; U.S. Patent 4538980; backed by a 1-year manufacturer warranty
