KE Fibertec weaving mill

KE Fibertec is the only manufacturer of fabric ducts worldwide to have their own weaving mill

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Air the Way You Want

KE Fibertec NA is a subsidiary of KE Fibertec AS with its corporate headquarters located in Denmark.

KE Fibertec was one of the first fabric duct manufacturers established in the early 1970's and since then has grown into the largest fabric duct manufacturer in the world- and the only one with its one weaving mill.

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KE Fibertec NA is located in Edgewood, Maryland (north of Baltimore) and is equipped with advanced calculation software enabling its experienced engineers to simulate the solution and to offer the best technical support in the fabric duct industry. This office was founded in 1999 and since then has successfully been expanding its coverage throughout the United States and Canada by selling through our HVAC Manufacturers' Representatives.

Our HVAC Representatives are all ventilation professionals who are available to help you define your air distribution problem and design a solution for it, in close cooperation with the KE Fibertec NA office.

Fabric ducts have become very well known for their flexibility and efficiency for a wide range of applications. At the same time, KE Fibertec has established a reputation for offering the best fabric ducts on the market in terms of quality, aesthetics, performance, and industry advancements.

We hope that this website will provide you with the information you need to utilize fabric ducts in your building design. 50 years of experience back up our product lines and we look forward to applying this expertise in your next ventilation project.

KE Fibertec Group as of January 1, 2024

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about KE Fibertec

  • Mission

    To sell "Good indoor climate" is more than just supplying air distribution products. To us it is about dialogue, competence, reliability, and logistics.

    Our philosophy is to start with the requirements and - through dialogue - design a solution that meets the expectations specified for a good indoor climate. Just as people are different, indoor climate requirements are different, too.

    It is our objective to make "Air the way you want":

    • Through advanced use of fiber technology and competent advising, we wish to give our customers the benefits of fabric based air distribution (heating, ventilation and cooling) in all types of buildings.

    • We will continue to strengthen and develop our core competences in the R&D, logistics and production of fabric-based ventilation products in order to be the supplier of choice on selected markets worldwide.
  • Vision

    We shall work hard to create sustainable solutions that will work year after year. A good cooperation goes further than delivery of the next order.

    It is our vision to offer
     technology that makes a difference, and together with an efficient logistics function, we feel well positioned to solve your next ventilation job.

    Our criteria of success are (we want to build a culture based on):

    • Dialogue: we want to be in a dialogue with our customers and cooperation partners to find joint solutions that meet the end user's expectations of healthy indoor climate.

    • Quality: we want to supply the best quality in the market and on time. We do not compromise with quality, neither regarding design, documentation, nor finished products.

    • Innovation and sustainability: we want to be innovative and creative - we want to set the standards in fabric-based ventilation products worldwide in functionality and in our choice of sustainable materials.

    • Credibility: we want to be a professional partner with heavy demands on ourselves, our suppliers, and our cooperation partners.

    • Openness and respect: we want to develop a culture throughout the group based on respect for the competencies and differences of each individual. Regardless of position, there must be room for opinions and for innovative ideas to be appreciated/

    • Honesty: we want to be honest in our communication - even if it hurts.
  • CSR

    We Care

    KE Fibertec practice Corporate Social Responsibility (CSR) throughout the corporation. We believe that we as a responsible company must show social responsibility by actively involving ourselves in the community and voluntarily contribute to making the world a better place to be.

    UN Global Compact

    KE Fibertec respect the UN Global Compact principles which among other things involve human rights, environment, and anti-corruption.

    Read the 10 principles

    Working Environment

    Our employees are KE Fibertec's greatest asset, and therefore we prioritize their well-being in relation to their safety, health, and environment. The company is certified according to the ISO 45001:2018 Standard that ensures a good working environment. Further, we focus on the personal and professional development of every single employee to ensure that all members of our staff find it challenging and satisfactory to go to work.


    For many years KE Fibertec have sponsored children's and handicap organizations as well as other organizations where we believe that we can make a difference.

    We support the Danish Cancer Association, the Danish Childhood Cancer Organisation and other organizations who make life easier for the patients.

    Our partners around the world also join our efforts. Recently, KE Fibertec in Mexico has donated a number of assistive devices to a nursing home in their local area.

    Community actions are important to us. For instance we have collected toys and clothes for a children's home in Varnsdorf in the Czech Republic, where we also have a production plant that provides jobs for a number of local workers.

    Supporting the students

    We are in regular contact with students at the Danish technical colleges and universities, thereby supporting them in their project assignments, practical training, and field trips. We also work closely together with engineering students and scientists primarily at the University of Aalborg and the Technical University of Denmark with a view to jointly develop sustainable and efficient indoor climate solutions.

    Environment and Energy

    KE Fibertec care about the environment and we constantly work on energy saving initiatives throughout our organization. A reduction of the COemission not only benefits the environment but also the company's bottom line which in turn make sit possible for us to continue our work for sustainability.

  • Environment and energy

    At KE Fibertec, we care about the environment and about energy. We want to cause as little harm to the environment as possible, both in production and in transportation of our products. Therefore, we have launched a number of in-house, energy-saving initiatives to limit CO2 emissions.

    To show concern for the environment is to show responsibility and sustainable considerations. On top of that, it's good business.

    KE Fibertec is certified acc. to ISO 14001 (environment) and DS/OHSAS 18001 (working environment), and our fabric ducts are based on Oeko-Tex® Standard 100 certified yarns

    Cradle to Cradle

    We have achieved a Cradle to Cradle certification of CradleVent documenting the sustainability of the product.

    Carbon neutral electricity from windmills

    All electric power consumed by KE Fibertec and our weaving mill (KE Fibertec Væveri) is generated by windmills. Consequently, it is carbon neutral and not harmful to the environment.

    Download wind power certificates:
    KE Fibertec
    KE Fibertec weaving mill


    The EPD is an environmental product declaration that documents the life cycle environmental impact of a product.

    By choosing fabric ducts you are doing something good for the environment:

    • Because of the low weight of fabric ducts, the fuel consumption during transport (and therefore the CO2 emission) will decrease remarkably compared with transportation of traditional steel ducts

    • A properly dimensioned fabric system is able to function optimal at a lower pressure drop than conventional ceiling diffusers

    • The air distribution with fabric ducts is better, and it is therefore possible to offer a solution that does not take in "unnecessary" air. This results in energy efficiency - and a better indoor environment.

    Download Oeko-Tex certificate
    Download ISO 14001:2015 certificate
    Download ISO 45001:2018 certificate

  • EPD (Environmental Product Declaration)

    An EPD is an environmental product declaration that documents the environmental impact of a product throughout its life cycle. An EPD must be third-party evaluated.

    KE Fibertec EPDs are developed in accordance with the requirements of EN 15804+A2:2019 and verified by IBU, Germany.

    An EPD is a summary of an LCA (Life Cycle Assessment), which is documented in a more comprehensive report. The report is an in-depth and verified examination of the environmental impacts throughout the lifetime of the fabric duct. KE Fibertec offers EPDs for GreenWeave and MultiWeave solutions and the verified reports can be downloaded here.

    Along with the new EPDs, KE Fibertec has launched a new EPD generator where we can offer dynamic calculations per project. In the verified calculations, the environmental footprint of the entire product is GWP-Total in kg CO2 eq per 1 kg of total fabric duct including mounting rails, accessories and packaging.

    The environmental footprint is typically provided for the following conditions:

    • Cradle to gate (A1-A3) For direct product comparisons
    • Full lifetime (A1- C4) Lifetime calculation
    • Reuse (D1-D3) Circularity

    KE Fibertec offers full EPD documentation regardless of whether it is a quote or an order.

    It is important to ask your supplier to make a complete calculation for the entire product and not just the fabric. In a typical fabric duct, the fabric surface only accounts for 34-35% of the total environmental impact.

    KE Fibertec only offers an EPD for the complete duct including installation and accessories, i.e.

    1. Complete transparency
    Complete product-specific third-party verified EPD (everything included: Fabric material, mounting rails, accessories and packaging)

    2. Project-based EPD generator
    Everything tailored to the project at hand

    3. Extra sustainability points in building certifications such as DNGB and BREEAM
    Ask for KE Fibertec's updated documentation

    4. Lower carbon footprint with KE Fibertec's TBV solutions
    Achieve 5-6 times lower carbon footprint with KE Fibertec TBV solutions compared to *traditional steel solutions (Cradle to Gate (A1-A3) and lifecycle (A1-C4))
    *) Compared to the industry association VELTEK's EPD for round spiro ducts

    5. Take Back solutions
    Take advantage of KE Fibertec's Take Back solutions and recycling of all production waste. Part of our products at no charge

  • Quality

    KE Fibertec is ISO 9001 certified, which is a strategic management system to monitor the quality of all internal processes. Our goal is to deliver high quality products and services as agreed upon with the customer.

    We take pride in working honestly and being reliable for our customers, suppliers, and colleagues.

    Your time is valuable, and we understand the importance of delivering on time. 99.0% of our orders are delivered at the confirmed date.

    Any errors will be corrected immediately. Our report system identifies and implements actions necessary to obtain continuous improvements. We have constant focus on customer complaints and have been able to reduce this number to a historic low of 0.076%. in 2018.

    Customer complaints %

  • Jobs

    Currently we do not have any job openings but feel free to send us an unsolicited application with your resume at

  • KE Fibertec weaving mill

    As the only manufacturer of fabric ducts in the world, KE Fibertec has its own weaving mill. The company dates back to 1977 and is run by Frank Hansen, the third generation of the company. In 2020, we expanded the weaving mill with our own in-house laundry. In 2023, the laundry capacity was tripled and a new extension was built to house the KE Fibertec Group's material innovation centre.

    KE Fibertec Væveri is the only company in the world market that exclusively weaves materials for fabric ducting. This gives us a unique opportunity to select raw materials that give our fabrics the exact properties we want and that benefit our customers. This applies to properties such as shrinkage stability, color fastness, fire properties that do not require leaching of spin oils before testing, High Dust Holding Capacity (longer washing intervals) and, not least, uniform materials with a completely uniform airflow even after repeated washing.

    All materials are woven in Cradle to Cradle certified yarns, which is part of our circular business model. To ensure high color fastness and minimum water consumption in the dyeing process, we only offer yarn-dyed materials that - compared to conventional piece dyeing - offer the benefit of approximately 65% less water consumption in the dyeing process. The textile industry worldwide is both famous and infamous for using even very large amounts of water resources for dyeing. At KE Fibertec, water consumption for dyeing is almost non-existent, and we can offer our entire color range - including dark colors - with the same low environmental impact.

    In addition to GreenWeave and MultiWeave, which are woven in 100% polyester (Cradle to Cradle approved) and available in up to seven different variants (air porosity), we can supply special products such as Nomex and anti-static Trevira CS.


Order our catalog for further information

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To be able to properly design a fabric-based ventilation system, it is important to understand a number of essential parameters and concepts.

A fabric-based ventilation system is not fundamentally different from conventional ventilation systems, but there are a number of key points where it is important to be extra cautious, such as pressure conditions, pressure loss, pulsations, pressure impact, entrainment, air velocities, and sound.

It is very obvious when a fabric based ventilation system has been designed incorrectly, because the ducts will be oval in shape and "sagging" when you look at them. The difference in the static pressure between two parallel ducts may be quite considerable too.

This not only has an impact on the aesthetic appearance, but also to a great extent on air distribution. If the pressure distribution is uneven, then this can cause draft problems below and around the duct with high static pressure, while in the opposite case, the air quality will be poor where the static pressure (and therefore the volume of air) is not sufficient.

Further, there may be a risk of pulsations in the fabric material that may damage not only the fabric material but also the suspension material.

Finally, a properly designed fabric ventilation system is important, as a poor design can impact the noise generated by the system greatly.

Design and flow visualization with TBV Designer

KE Fibertec has developed the TBV Designer program in order to be able to document technical data supported by know-how.

The program enables flow visualizations and documentation of the solution. It also features freedom of design, spacing, and information on velocity within the occupied zone height.

See more in the film below showing the dimensioning of Water & Wellness Flintholm

Dialogue & Quotations

KE Fibertec has developed a number of tools and services that our customers can choose to use throughout the entire project process. Our services are graded so that customers can decide for themselves which ones they do and do not want. Our opinion is that no two jobs are the same, and no solution is standard. Consequently, the documentation and level of detail need to be adapted to the requirements and specifications of each individual project.

Our service can be split into two categories:

  • Quotation and design
  • Extended project documentation

Our quotation and design processes are described in detail in our ISO 9001 quality assurance system. This ensures that we prepare the basis for the quotation and the quotation itself according to standardized guidelines, making sure that the customer's requirements are specified and documented in full detail.

KE Fibertec puts a large emphasis on ensuring that the final solution is designed correctly, even at the quotation stage. After all, it is not only about ensuring that the fabric based ventilation system works properly, but just as importantly, that the customer's indoor climate requirements have been met. This is why we ask about the system's functional requirements and the requirements for the indoor climate at the quotation stage.

All the calculations are proven using our unique software TBV Designer, which is offered to all our customers, regardless of the size of their project and, of course, free of charge.

Of course detailed mounting and maintenance instructions are included. For complicated fabric duct systems we also include AutoCad drawings.

As part of our extended project documentation we offer full-scale measurements in our laboratory, on-site measurements, and separately quoted CFD simulations.