{"product_id":"round-ceiling-diffuser-8-white-steel-supply-with-damper","title":"8\" White Steel Round Ceiling Diffuser with Butterfly Damper \u0026 Handle, Supply Vent Cover for Round Neck Air Ducts","description":"\u003cstyle\u003e\n.ag-spec,.ag-compare{margin:0 0 1.6rem;-webkit-font-smoothing:antialiased}\n.ag-spec table{width:100%;max-width:560px;border-collapse:collapse;font-size:15px;line-height:1.5}\n.ag-spec td{padding:14px 2px;text-align:left;vertical-align:top;border:0;border-bottom:1px solid #eef1f4}\n.ag-spec tr:last-child td{border-bottom:0}\n.ag-spec td:first-child{color:#00446b;font-weight:700;font-size:14.5px;white-space:nowrap;width:44%}\n.ag-spec td:first-child strong{font-weight:700}\n.ag-spec td:last-child{color:#1f2733;font-weight:400}\n.ag-compare table{width:100%;max-width:760px;border-collapse:collapse;font-size:15px;line-height:1.5}\n.ag-compare th{background:transparent;color:#00446b;padding:14px 16px;text-align:left;font-size:14.5px;font-weight:700;border-bottom:1px solid #e3e7ec}\n.ag-compare td{padding:14px 16px;text-align:left;vertical-align:top;border:0;border-bottom:1px solid #eef1f4;color:#1f2733;font-weight:400}\n.ag-compare tbody tr:last-child td{border-bottom:0}\n\u003c\/style\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e8\" Neck\u003c\/strong\u003e white steel round ceiling diffuser carries supply air into the room through a ceiling opening. Powder-coated steel resists dents and rust for years of use, a stronger choice than lightweight plastic covers. A built-in damper adjusts or shuts the airflow, so comfort can be set room by room. Select this round ceiling diffuser by its \u003cstrong\u003eneck size\u003c\/strong\u003e size, not the overall face size, so it seats correctly on the first fit.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction:\u003c\/strong\u003e Steel keeps the round ceiling diffuser rigid during installation and resists warping over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite finish:\u003c\/strong\u003e The white finish coordinates with common flooring, trim, and hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable airflow:\u003c\/strong\u003e The built-in damper controls the volume and direction of air for each room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRight-fit sizing:\u003c\/strong\u003e Ordered by neck size size, this round ceiling diffuser matches standard duct dimensions and cuts wrong-size returns.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDimensions and Specifications\u003c\/h2\u003e\u003cdiv class=\"ag-spec\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRound Ceiling Diffuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupply air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal opening\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8\" Neck\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall face dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11-15\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCeiling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdjustable damper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrder by\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNeck Size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMPN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e410201-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAirGrilles.com\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eIs This the Right Vent for Your Opening?\u003c\/h2\u003e\u003cp\u003eChoose this round ceiling diffuser if you need an \u003cstrong\u003eadjustable supply-air\u003c\/strong\u003e vent for a ceiling opening. This round ceiling diffuser carries supply air and mounts on ceiling surfaces. It is not designed for floor installation or foot traffic, exterior or outdoor use, dryer exhaust venting or use as a filter-holding return grille. Confirm the airflow function against your HVAC layout before ordering.\u003c\/p\u003e\u003ch2\u003eHow to Measure for This Vent\u003c\/h2\u003e\u003cp\u003eMeasure the round duct or collar the diffuser connects to and match it to the \u003cstrong\u003e8\" Neck\u003c\/strong\u003e neck size above. Do not measure the outer panel. The overall face measures \u003cstrong\u003e11-15\/16\"\u003c\/strong\u003e.\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003ePosition the round ceiling diffuser over the neck size with the louvers facing the room. Confirm the frame sits flush against the ceiling surface before marking the screw points. Secure it with the included screws without overtightening, since excess force can distort the frame.\u003c\/p\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 x round ceiling diffuser\u003c\/li\u003e\n\u003cli\u003e1 x butterfly damper with key handle\u003c\/li\u003e\n\u003cli\u003eMounting screws\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDuctwork, wall anchors, and installation tools are not included.\u003c\/p\u003e\u003ch2\u003eCare and Maintenance\u003c\/h2\u003e\u003cp\u003eClean the round ceiling diffuser with a soft, damp cloth and mild soap. Avoid abrasive chemicals that can damage the white finish. Dry the surface to keep moisture off the metal.\u003c\/p\u003e\u003ch2\u003eCompare Similar Options\u003c\/h2\u003e\u003cp\u003eUse this comparison to confirm the round ceiling diffuser matches your opening and airflow need.\u003c\/p\u003e\u003cdiv class=\"ag-compare\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eInstallation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThis round ceiling diffuser\u003c\/td\u003e\n\u003ctd\u003eDirectional ceiling or wall supply\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003ctd\u003eCeiling or wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLinear slot diffuser\u003c\/td\u003e\n\u003ctd\u003eModern slim supply lines\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003eWall, ceiling or floor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSidewall supply register\u003c\/td\u003e\n\u003ctd\u003eWall supply openings\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003ctd\u003eWall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat does the listed size refer to?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe listed \u003cstrong\u003e8\" Neck\u003c\/strong\u003e is the neck size size the vent fits, not the outer face. The overall face measures \u003cstrong\u003e11-15\/16\"\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a supply register or a return grille?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is a \u003cstrong\u003esupply-air\u003c\/strong\u003e round ceiling diffuser. It moves conditioned air into the room.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the airflow adjustable?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The built-in damper controls the volume and direction of airflow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this be installed on the floor?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. This model is not rated for foot traffic and should be used on wall or ceiling openings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre mounting screws included?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. Mounting screws ship with every unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the grille be painted?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The steel face accepts spray primer and paint for a custom color.\u003c\/p\u003e","brand":"AirGrilles.com","offers":[{"title":"Default Title","offer_id":42807935926448,"sku":"HND-CAD-DAMP-8-WH-fbm","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/7201\/1696\/products\/1_f683c1e6-23e4-42d7-aab2-57ce2f9c491b.jpg?v=1751353510","url":"https:\/\/airgrilles.com\/products\/round-ceiling-diffuser-8-white-steel-supply-with-damper","provider":"AirGrilles.com","version":"1.0","type":"link"}