{"product_id":"io-hvac-controls-rm-1816-rectangular-zone-damper-18x16","title":"Io Hvac Controls RM-1816 Rectangular Zone Damper 18x16","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IO HVAC CONTROLS RM-1816 is a rectangular zone damper designed for residential and light-commercial forced-air HVAC zoning systems. It ships with a 35-second Belimo actuator wired in a 3-wire configuration, allowing the damper blade to open and close on command from a zone control board. The damper body measures 18 inches wide by 16 inches in duct opening size and fits within an overall assembly envelope of 18 inches wide, 24 inches tall, and 8 inches deep. Installation is performed by licensed HVAC technicians during zoning system commissioning or retrofit work.\u003c\/p\u003e\n\u003cp\u003eThis damper is suited for rectangular duct branches in residential and light-commercial forced-air zoning applications. It is used where individual zones require independent airflow control, such as multi-story homes or buildings with separate thermostatic zones. The 3-wire Belimo actuator accepts a standard open, close, and common signal from a compatible zone control panel, making it a straightforward fit in most zone system wiring schemes. The 35-second stroke time provides smooth, controlled blade travel that reduces system pressure spikes during zone transitions.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e18 x 16 inch rectangular duct opening for compatibility with standard rectangular branch ductwork\u003c\/li\u003e\n  \u003cli\u003eIntegrated 35-second Belimo actuator for smooth, reliable blade travel\u003c\/li\u003e\n  \u003cli\u003e3-wire actuator wiring for straightforward connection to zone control boards\u003c\/li\u003e\n  \u003cli\u003eOverall assembly dimensions of 18 x 24 x 8 inches for planning clearances during installation\u003c\/li\u003e\n  \u003cli\u003e9.73-pound assembly weight supports standard duct hanger spacing without additional bracing in most installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style rectangular zone damper replacement for forced-air zoning systems that accept a 3-wire Belimo-style actuator interface.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician. Power down the air handler and zone control panel at the disconnect before wiring the actuator. Secure the damper body to the duct section per sheet-metal industry practice, ensuring the blade operates without obstruction before finalizing the duct connection. Verify actuator travel direction and end-stop calibration against the zone control manufacturer specifications before returning the system to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuct Opening Size\u003c\/strong\u003e: 18 x 16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Type\u003c\/strong\u003e: Belimo 3-wire\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Stroke Time\u003c\/strong\u003e: 35 seconds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Height\u003c\/strong\u003e: 24 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Depth\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 9.73 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: IO HVAC CONTROLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: RM-1816\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IO HVAC CONTROLS","offers":[{"title":"Default Title","offer_id":67952158409010,"sku":"RM-1816","price":308.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/745ecffd07cbe47f75f5847deb081dca_6fa2d8b7-d869-4387-b33a-23be1ccfff82.jpg?v=1791748358","url":"https:\/\/voomisupply.com\/products\/io-hvac-controls-rm-1816-rectangular-zone-damper-18x16","provider":"Voomi Supply","version":"1.0","type":"link"}