EPP ducts manufactured from 15 mm thick EPP expanded polypropylene, which has better reinforcing, noise suppression, thermal insulation and anti-condensation properties than EPE polyethylene
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	extremely rigid and lightweight construction 
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	ducts do not require additional insulation 
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	eleminates thermal bridges 
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	recommended to use in air recirculation systems for exhaust or supply 
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	ducts with a 43 mm thick wall available on request 
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	thermal conductivity: 0.039 W / mK 
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	tightness class: C 
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	surface roughness: 0.077 mm