Ducting
Ducting comes in two grades - normal and acoustic. Normal is fine for most situations, but with the bigger fans in a domestic setting, acoustic ducting can make a big difference, reducing an extra 30% of air turbulence noise. Both grades of ducting are also sold in 10mtr box lengths.
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Standard Strongly made from aluminium and polyester laminates wrapped around a flexible steel helix. Highly flame retardant too! |
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Acoustic The secret in acoustic ducting is the perforated inner core. Sound leaks through the holes and is absorbed and trapped by the special insulation wrapped around it. |