{"product_id":"ewc-controls-end-ma15s-12x8-nd-motorized-damper-24v","title":"Ewc Controls END-MA15S-12X8 Nd Motorized Damper 24V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe EWC CONTROLS END-MA15S-12X8 is a normally closed (ND) motorized zone damper designed for rectangular duct applications in forced-air HVAC systems. Operating at 24 volts, this damper features a 15-second motor for controlled airflow modulation and includes an LED status indicator for quick visual confirmation during installation and service. The motor is bottom-mounted and uses a 3-wire connection to the actuator. Measuring 12 inches by 8 inches, it fits standard rectangular duct openings in residential and light commercial zoning setups. Licensed HVAC technicians handle installation as part of zone control or air quality system work.\u003c\/p\u003e\u003cp\u003eThis damper is intended for air quality and zone control applications within forced-air duct systems. Its rectangular form factor makes it suitable for trunk lines and branch runs where directional airflow control is required. The 15-second motor cycle time allows for smooth, measured blade travel, reducing pressure spikes in the duct system. It is compatible with standard 24-volt zone control boards and thermostats used in residential and light commercial zoning systems.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e24-volt operation compatible with standard zone control boards and low-voltage thermostats\u003c\/li\u003e\n\u003cli\u003e15-second motor cycle for smooth, controlled blade actuation\u003c\/li\u003e\n\u003cli\u003eLED status indicator for visual confirmation during commissioning and service\u003c\/li\u003e\n\u003cli\u003eBottom-mounted motor for accessible installation in typical duct configurations\u003c\/li\u003e\n\u003cli\u003e3-wire motor connection for straightforward wiring to zone panels\u003c\/li\u003e\n\u003cli\u003eRectangular shape sized at 12 inches by 8 inches for standard duct fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-install motorized damper for 24-volt zone control systems using rectangular duct openings in residential and light commercial forced-air applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician familiar with low-voltage zoning systems. Power down the zone control panel before wiring the damper to avoid damage to the actuator or control board. Verify duct dimensions match the damper opening before securing to prevent air bypass. Follow local mechanical codes and the zone system manufacturer wiring diagram when connecting the 3-wire actuator leads.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: ND Motorized Damper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize\u003c\/strong\u003e: 12 inches x 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Rectangular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 24 volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Speed\u003c\/strong\u003e: 15-second cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWires to Motor\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Mount\u003c\/strong\u003e: Bottom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Indicator\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Air Quality \/ Zone Control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: EWC CONTROLS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: END-MA15S-12X8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EWC CONTROLS","offers":[{"title":"Default Title","offer_id":51344662659378,"sku":"END-MA15S-12X8","price":237.29,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310554872.jpg?v=1782039544","url":"https:\/\/voomisupply.com\/products\/ewc-controls-end-ma15s-12x8-nd-motorized-damper-24v","provider":"Voomi Supply","version":"1.0","type":"link"}