{"product_id":"imperial-7-in-d-28-ga-galvanized-steel-round-starting-collar","title":"Imperial 7 in. D 28 Ga. Galvanized Steel Round Starting Collar","description":"\u003cdiv\u003e\n\u003cp\u003eDesigned for reliable round vent connections, the Imperial 7 in. D 28 Ga. Galvanized Steel Round Starting Collar delivers a sturdy, corrosion-resistant starting point for your chimney vent run. Its 7-inch diameter and 28-gauge galvanized steel body strike a balance of durability and light weight, making it a practical choice for both DIY projects and professional installations.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 7 inches — matches standard round vent components for a seamless connection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial \u0026amp; Gauge\u003c\/strong\u003e: 28-gauge galvanized steel provides a capable blend of strength, ease of handling, and cost efficiency.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Silver galvanized coating offers dependable corrosion resistance in attic, crawlspace, or exterior environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePackaging\u003c\/strong\u003e: Bulk packaging supports contractors and larger jobs with fewer shipments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUL Listing\u003c\/strong\u003e: Not UL Listed — plan installations accordingly if your project requires listed components.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eThe Imperial round starting collar is engineered to initiate a round vent run from standard 7-inch round ductwork. It provides a clean, secure transition point at the start of a chimney vent path, helping to minimize air leaks and maintain proper alignment as you extend your vertical or horizontal venting system.\u003c\/p\u003e \u003ch3\u003ePractical applications and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eResidential venting projects where a robust, easy-to-install starting point is needed for a round chimney or vent pipe.\u003c\/li\u003e \u003cli\u003eRetrofits and new installations that require a lightweight, corrosion-resistant collar to bridge components.\u003c\/li\u003e \u003cli\u003eProjects that benefit from bulk packaging to keep multiple collars on hand for ongoing work.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation tips\u003c\/h3\u003e\n\u003col\u003e \u003cli\u003eEnsure all mating surfaces are clean and dry before assembly.\u003c\/li\u003e \u003cli\u003ePosition the collar so the 7-inch opening aligns precisely with your round vent components.\u003c\/li\u003e \u003cli\u003eUse appropriate fasteners and sealant per local code and manufacturer guidelines to secure the connection and prevent leaks.\u003c\/li\u003e \u003cli\u003eInspect the completed connection for proper alignment and a snug fit to maintain efficient airflow.\u003c\/li\u003e\n\u003c\/ol\u003e \u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003ePeriodically inspect the collar for signs of corrosion or wear, especially in areas exposed to moisture. Reseal or replace as needed to preserve a tight, secure connection and optimal vent performance.\u003c\/p\u003e \u003cp\u003eChoose the Imperial 7 in. D 28 Ga. Galvanized Steel Round Starting Collar when you need a dependable, purpose-built starting point for your round vent system. Its combination of 7-inch diameter, 28-gauge galvanized steel, and bulk-pack convenience helps you complete installations with confidence and efficiency.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Imperial","offers":[{"title":"Default Title","offer_id":52199929905426,"sku":"4005039","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/4005039_A.eps_High.jpg?v=1776292866","url":"https:\/\/nationalhardwaregroup.com\/products\/imperial-7-in-d-28-ga-galvanized-steel-round-starting-collar","provider":"National Hardware Group","version":"1.0","type":"link"}