1.0GLOREFEN - Global Refrigeration Engineeringhttps://glorefen.com/enbilimonhttps://glorefen.com/en/author/bilimon/rich600338<blockquote class="wp-embedded-content" data-secret="BUxdr0jnxj"><a href="https://glorefen.com/en/product/roof-fans/">Roof Fans</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://glorefen.com/en/product/roof-fans/embed/#?secret=BUxdr0jnxj" width="600" height="338" title="“Roof Fans” — GLOREFEN - Global Refrigeration Engineering" data-secret="BUxdr0jnxj" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !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); //# sourceURL=https://glorefen.com/en/wp-includes/js/wp-embed.min.js </script> https://glorefen.com/en/wp-content/uploads/2025/07/cati_tipi_fanlar.jpg15001500Features and Applications Roof fans are high-efficiency ventilation units mounted on the top structure of buildings to exhaust indoor air or supply fresh air from outside. Supporting the natural chimney effect, they play an important role in ventilation, exhaust, and smoke extraction in industrial, commercial, and residential buildings.