{"product_id":"ewc-controls-esid-4-motorized-slip-in-damper-4-in-round","title":"Ewc Controls ESID-4 Motorized Slip-in Damper 4 in Round","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EWC CONTROLS ESID-4 is a 4-inch round motorized slip-in damper built for retrofit HVAC zoning applications. The damper slides into a 1.25-inch slot cut into existing round ductwork, making it a practical solution for adding zone control without major duct modification. A double-layered blade with an integrated cellular foam sealing gasket keeps leakage below 5 percent at static pressures up to 1 inch w.c. The UL Listed 24-volt AC actuator is a 3-wire, power-open and power-close type rated at 18 inch-pounds of torque. A 5-year warranty covers the assembly. Licensed HVAC technicians and zoning contractors are the typical installers.\u003c\/p\u003e\n\u003cp\u003eThe ESID-4 is intended for residential and light commercial round duct systems where existing ductwork requires zone damper retrofitting without full duct replacement. It is suited for air quality and comfort zoning projects where precise airflow control into individual zones or areas is required. The adjustable End-Stops allow the installer to set minimum and maximum blade positions, enabling design CFM tuning for each zone without additional balancing hardware. The motor can be oriented at any angle around the duct, giving flexibility in tight mechanical spaces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSlips into a 1.25-inch slot in existing round duct for fast retrofit installation\u003c\/li\u003e\n  \u003cli\u003eDouble-layered blade with integrated cellular foam gasket — less than 5 percent leakage at 1 inch w.c. static pressure\u003c\/li\u003e\n  \u003cli\u003eUL Listed 24-volt AC, 3-wire power-open and power-close actuator rated at 18 inch-pounds of torque\u003c\/li\u003e\n  \u003cli\u003eAdjustable End-Stops for minimum and maximum position control to dial in zone CFM\u003c\/li\u003e\n  \u003cli\u003eTravel indicator and OPEN\/CLOSE LEDs provide visual confirmation of damper position\u003c\/li\u003e\n  \u003cli\u003eMotor mounts at any rotational angle around the duct for flexible installation\u003c\/li\u003e\n  \u003cli\u003eIntegrated terminal block and NEMA 1 rated actuator housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style retrofit damper for 4-inch round duct systems in residential and light commercial HVAC zoning installations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed HVAC technicians. Power down the air handler and de-energize the zone control panel before cutting the duct slot or making wiring connections. A 1.25-inch slot must be cut cleanly and squarely into the existing round duct to allow proper blade seating and gasket seal. Wire the 24-volt AC actuator per the zone controller manufacturer's wiring diagram and verify End-Stop positions before restoring system power.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Motorized Slip-In Damper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 24 volts AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Type\u003c\/strong\u003e: Power-open and power-close, 3-wire\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Torque Rating\u003c\/strong\u003e: 18 inch-pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Static Pressure\u003c\/strong\u003e: 1 inch w.c.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeakage Rate\u003c\/strong\u003e: Less than 5 percent at rated static pressure\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlot Requirement\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Listing\u003c\/strong\u003e: UL Listed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Housing Rating\u003c\/strong\u003e: NEMA 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWires to Motor\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Air Quality and HVAC Zoning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: 5 years\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: ESID-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EWC CONTROLS","offers":[{"title":"Default Title","offer_id":51346885902642,"sku":"ESID-4","price":144.35,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310554862.jpg?v=1782093553","url":"https:\/\/voomisupply.com\/products\/ewc-controls-esid-4-motorized-slip-in-damper-4-in-round","provider":"Voomi Supply","version":"1.0","type":"link"}