KNAUF Ceiling Solutions Armstrong Feltworks Acoustical Panels allow for a unique look for any space. with a soft visual texture that quietens down interiors. Reduce noise and define spaces with these panels that absorb up to 80% of the sound that strikes them. Easy installation with bevel or square edge options, Feltworks ceiling and wall panels are available in a wide range of bright colours and rich hues. Also, it is an Eco-Preferable product which meets the most stringent industry sustainability standards today.