Home / Ducting / Attenuators & Ancillaries / Duct Silencer Duct Silencer £33.63 – £110.18 DUCTMASTER PVC 220x90mm in-line flat duct silencer. Available in 3 sizes. Size Choose an option1000mm1500mm500mm Clear Duct Silencer quantity Add to basket SKU: N/A Categories: Attenuators & Ancillaries, Ducting Tag: PVC Duct Silencer Product ID: 10474