In-line Back Draft Dampers are designed for use in horizontal and vertical lines and are used to reduce backward air flow in the line. If the airflow in your application is upward, please specify that vertical operation is required when ordering. Nordfab® dampers are now available in galvanized, aluminum, stainless and stainless+ with optional no. 4 finish.
Construction:
Seam: longitudinal seam is lapped, spot welded, and caulked
Collars: located on the exterior side of each port and considered as air flow non-directional. Collars have a laser welded longitudinal seam (exception: 3" collars are lapped, spot welded, and caulked.) If air flow directional product is required, it must be stated on the PO and additional cost may be incurred. A raised lap seam and spot weld are used for attaching the collar to the body and no caulking is used. If caulking is required, additional cost may be incurred
ORDERING NOTES: Unless specified, 3" through 24" is QF. Over 24" is flanged. Data subject to change without notice. Stainless steel components requiring flanges will be supplied with stainless steel flanges unless otherwise specified. For special parts or items to be custom manufactured, contact us for quotation.
As a manufacturer and distributor of Air Cleaning, Ducting, and Filtration products we are proud to have been identified as an essential business. We will remain open for business performing essential operations during this crisis, supplying industrial, military, and healthcare operations with our products. We are shipping orders on time, with no delay in manufacturing.
Our phone lines are open from 9am-5pm central time, Monday through Friday. Our staff is working remotely wherever possible and we will maintain a bare minimum staff on-site to perform basic operations of order processing and accounting. Our on-site staff will follow the appropriate best practices and guidelines set forth by OSHA's latest release of "Guidance on Preparing Workplaces for COVID-19."
These are unprecedented times and we are committed to protecting both our employees and our communities. Clean air has never been more important, and we're making sure our customers have everything they need. From those working from home who need high quality air filters, to the other essential businesses we supply products to, we're here for you.
We thank you for your support and your business and we hope that this will all be over soon.
Nordfab's Materials Surcharge
Beginning February 12, 2021, Nordfab will include a 25% materials surcharge on all products.
Volatility in the steel industry has led to unprecedented steel price increases since August 2020, and this surcharge affects all Nordfab distributors & customers.
As Nordfab's largest distributor, we remain committed to bringing you the highest value products and services as well as to providing transparency related to our pricing.
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