{"product_id":"registre-rond-galvanise-cle-de-debit","title":"Galvanized Round Damper (Balancing Key)","description":"\u003cp\u003eThe \u003cstrong\u003egalvanized round damper\u003c\/strong\u003e is installed in a \u003cstrong\u003eround duct\u003c\/strong\u003e branch to adjust its airflow. Its \u003cstrong\u003ebalancing key\u003c\/strong\u003e, on the outside of the duct, turns an inner blade: open, the air flows freely; partly closed, the branch gets less air.\u003c\/p\u003e\n\u003ch2\u003eThe basic balancing tool\u003c\/h2\u003e\n\u003cp\u003eAn overheated room above the furnace, a cold bedroom at the far end of the house: in most cases, the difference comes from how the air is split between the branches. By slightly restricting the branches that get the most, the dampers send air back to the rooms that are short of it. The same principle applies to the branches of an \u003cstrong\u003eair exchanger\u003c\/strong\u003e, to set the fresh air supply or exhaust for each room.\u003c\/p\u003e\n\u003ch3\u003eSix diameters\u003c\/h3\u003e\n\u003cp\u003eAvailable in 4, 5, 6, 8, 10 and 12 in. Choose the nominal diameter of the duct it will be installed on.\u003c\/p\u003e\n\u003ch3\u003eWhere and how to install it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIn a straight run, away from elbows, for a more stable setting.\u003c\/li\u003e\n\u003cli\u003eWhere the key will stay accessible, even after the ceiling is finished.\u003c\/li\u003e\n\u003cli\u003eScrewed and sealed with \u003cstrong\u003ealuminum tape\u003c\/strong\u003e or \u003cstrong\u003emastic\u003c\/strong\u003e at each end.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdjust with the system running, in small steps, and note the final position of each key. Never fully close all the branches in the same area: the unit needs its full airflow.\u003c\/p\u003e\n\u003ch2\u003eSupplied, installed and adjusted by AirGreen\u003c\/h2\u003e\n\u003cp\u003eWe install dampers and balance duct systems in \u003cstrong\u003eMontréal\u003c\/strong\u003e, \u003cstrong\u003eLaval\u003c\/strong\u003e, \u003cstrong\u003eLongueuil\u003c\/strong\u003e, on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e and the \u003cstrong\u003eNorth Shore\u003c\/strong\u003e. RBQ licence 5645-9605-01, subcategory 15.8 Ventilation. For availability or a quote, call us at \u003ca href=\"tel:+15143162973\"\u003e514 316-2973\u003c\/a\u003e or email \u003ca href=\"mailto:sales@airgreen.ca\"\u003esales@airgreen.ca\u003c\/a\u003e with the diameter and the quantity.\u003c\/p\u003e","brand":"AirGreen","offers":[{"title":"4 in","offer_id":67638671900964,"sku":"AG-VC-01101","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"5 in","offer_id":67638671933732,"sku":"AG-VC-01102","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"6 in","offer_id":67638671966500,"sku":"AG-VC-01103","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"8 in","offer_id":67638671999268,"sku":"AG-VC-01104","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"10 in","offer_id":67638672032036,"sku":"AG-VC-01105","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"12 in","offer_id":67638672064804,"sku":"AG-VC-01106","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/AG-VC-011_00_principale.png?v=1791986482","url":"https:\/\/airgreen.ca\/en\/products\/registre-rond-galvanise-cle-de-debit","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}