{"product_id":"ewc-controls-end-20x8-ma15s-motorized-zone-damper-20x8-in","title":"Ewc Controls END-20X8-MA15S Motorized Zone Damper 20x8 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EWC CONTROLS END-20X8-MA15S is a motorized zone damper from the ND Ultra-Zone series, designed for forced-air HVAC zoning systems. It operates on a three-wire power open\/power closed configuration, giving zone controllers direct, positive blade positioning in both directions. The motor delivers 17 inch-pounds of torque and includes a manual gear release for service situations. A built-in LED display lets technicians verify damper operation at a glance during commissioning. Nylon bushings and overlapping blades contribute to quiet, accurate airflow control across individual zones. Licensed HVAC technicians install this damper as part of a multi-zone residential or light-commercial duct system.\u003c\/p\u003e\n\u003cp\u003eThe END-20X8-MA15S fits a 20-by-8-inch rectangular duct opening and is intended for use in residential and light-commercial forced-air zoning applications. It is engineered to integrate with the EWC CONTROLS Ultra-Zone zoning system. The damper suits new construction and retrofit installations where individual room or zone temperature control is required. Its quick-connecting terminal block accepts wiring without wire nuts, reducing installation time on multi-damper jobs. The sturdier frame design allows for faster duct insertion compared to standard damper frames.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThree-wire power open\/power closed operation for positive bidirectional blade control\u003c\/li\u003e\n  \u003cli\u003e17 inch-pounds of motor torque with manual gear release for service access\u003c\/li\u003e\n  \u003cli\u003eLED display provides on-damper diagnostic feedback during installation and checkout\u003c\/li\u003e\n  \u003cli\u003e97 percent leak-proof rating with overlapping blade design for accurate zone isolation\u003c\/li\u003e\n  \u003cli\u003eQuick-connecting terminal block eliminates wire nuts and speeds field wiring\u003c\/li\u003e\n  \u003cli\u003eUL listed motor with NEMA Class 2 certification\u003c\/li\u003e\n  \u003cli\u003eNylon bushings for quieter operation and extended motor service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with the EWC CONTROLS Ultra-Zone zoning system. Fits 20-by-8-inch rectangular duct openings in residential and light-commercial forced-air HVAC installations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician familiar with forced-air zoning systems and low-voltage control wiring. Shut down the air handler and de-energize all control circuits before inserting or wiring the damper. Verify duct dimensions match the 20-by-8-inch damper frame before securing. Follow the zoning system controller wiring diagram and applicable local mechanical codes when terminating the three-wire motor leads at the terminal block.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamper Size\u003c\/strong\u003e: 20x8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Torque\u003c\/strong\u003e: 17 inch-pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Power open \/ power closed, 3-wire\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeak Rating\u003c\/strong\u003e: 97 percent leak-proof\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Certification\u003c\/strong\u003e: UL listed, NEMA Class 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Length\u003c\/strong\u003e: 24 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 14 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 6.8 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: EWC CONTROLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: END-20X8-MA15S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EWC CONTROLS","offers":[{"title":"Default Title","offer_id":51347515179314,"sku":"END-20X8-MA15S","price":279.05,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310555023.webp?v=1782107315","url":"https:\/\/voomisupply.com\/products\/ewc-controls-end-20x8-ma15s-motorized-zone-damper-20x8-in","provider":"Voomi Supply","version":"1.0","type":"link"}