Available in 15mm or 20mm slot width with adjustable air control blades. Nominal length ranges from 300 to 1800mm with 1-4 slots. Volume flow rate ranges from 3 to 360 l/s. Temperature difference between supply and room air ranges from -10 to +10K
Basotect® is a flexible melamine resin foam with open-cell structure. Introduced in 1984 as world's first melamine resin foam. Available in eight grades for different applications
Soundproofing impedes sound propagation through various methods. Distance between source and receiver reduces sound intensity. Sound waves attenuate according to inverse square of distance
Foam glass is made by heating glass with blowing agents like carbon or limestone. Contains gas-filled closed-cell pores comprising 80-90% of total volume. First developed by Saint-Gobain in 1930s using calcium carbonate
Felt is produced by matting, condensing, and pressing fibers together. Wool felt is one of the oldest known textiles. Originated in central Asia, particularly Siberia and Mongolia. Used for clothing, jewelry, wall hangings, and animal blankets. Nomadic peoples used felt for yurts, tents, and household items
Attenuation is the gradual loss of flux intensity through a medium. Measured in decibels (dBs) and represented by attenuation coefficient. Often follows Beer-Lambert law with exponential path length dependence