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</html><thumbnail_url>https://shop.groupscience.gr/_w/wp-content/uploads/2020/10/attenuator2.png</thumbnail_url><thumbnail_width>450</thumbnail_width><thumbnail_height>335</thumbnail_height><description>We design&#xA0;and manufacture&#xA0;duct attenuators in response to specific requirements from acoustical consultants, consulting engineers, owners and contractors. Our duct silencers provide the most economical choice for solving the wide diversity of noise control problems encountered in HVAC engineering. Standard rectangular duct attenuator cross sections range from 150mm x 150mm&#xA0;to 1200mm x 1200mm. For small mains, [&hellip;]</description></oembed>
