Jet Fans 0 Reviews If the tunnel is open at both ends, a jet fan can be used to maintain a consistent air flow throughout the tunnel. These fans run without ducting. SUBMIT ENQUIRY Submit SEE MORE Ventilation Systems Features Sizes Reviews (0) Robust No need for ducting 1000mm 1500mm Add New CommentReply CommentNameEmailComments HtmlPreview b i u quote Notify me when new comments are added Enter the code shown above in the box below Save Comment