{"version":"1.0","provider_name":"GLOREFEN - Global Refrigeration Engineering","provider_url":"https:\/\/glorefen.com\/en","author_name":"bilimon","author_url":"https:\/\/glorefen.com\/en\/author\/bilimon\/","title":"Circular Air Dampers - GLOREFEN - Global Refrigeration Engineering","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"UqXOw2QuHL\"><a href=\"https:\/\/glorefen.com\/en\/product\/circular-air-dampers\/\">Circular Air Dampers<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/glorefen.com\/en\/product\/circular-air-dampers\/embed\/#?secret=UqXOw2QuHL\" width=\"600\" height=\"338\" title=\"&#8220;Circular Air Dampers&#8221; &#8212; GLOREFEN - Global Refrigeration Engineering\" data-secret=\"UqXOw2QuHL\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/glorefen.com\/en\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/glorefen.com\/en\/wp-content\/uploads\/2025\/07\/YUVARLAK-HAVA-DAMPERI.jpg","thumbnail_width":1500,"thumbnail_height":1500,"description":"Features and Applications  Circular air dampers are mechanical control elements used in round duct systems to regulate, direct, or shut off airflow. They are typically manufactured from galvanized steel, aluminum, or stainless steel. Available in single-blade or multi-blade configurations, they can be operated via manual lever, geared mechanism, or motorized actuator. Sealed designs with gaskets are preferred to ensure airtight performance. They provide low pressure drop, improving overall system efficiency."}