{"product_id":"m-m-507dr818-18-in-28-gauge-galvanized-steel-round-start-collar-with-damper","title":"M\u0026M 507DR818 18 in. 28 Gauge Galvanized Steel Round Start Collar with Damper","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe M\u0026amp;M 507DR818 is a round start collar designed to facilitate proper airflow in HVAC installations. This collar includes a built-in damper to regulate airflow effectively. Constructed from twenty-eight gauge galvanized steel, it offers durability and resistance to corrosion.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize: eighteen inches\u003c\/li\u003e\n\u003cli\u003eMaterial: galvanized steel\u003c\/li\u003e\n\u003cli\u003eIncludes damper for airflow control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThis collar is ideal for connecting ductwork in ventilation systems while providing adjustable airflow management.\u003c\/p\u003e\u003ch3\u003eProduct Information\u003c\/h3\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: M\u0026amp;M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: M\u0026amp;M Manufacturing - MiTek Industries, Inc.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN\u003c\/strong\u003e: 507DR818\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGauge\u003c\/strong\u003e: 28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Round start collar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamper\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Silver\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"M\u0026M MANUFACTURING","offers":[{"title":"Default Title","offer_id":50280797602098,"sku":"507DR818","price":37.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/240024012.png?v=1753510046","url":"https:\/\/voomisupply.com\/products\/m-m-507dr818-18-in-28-gauge-galvanized-steel-round-start-collar-with-damper","provider":"Voomi Supply","version":"1.0","type":"link"}