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125mm or 5" solid ducting is recommended to minimise air resistance
This QuietAir Basic Fan carries the Quiet Mark Approval and is part of an extended range of elegant
Therefore when you take into consideration the noise level and energy consumption of this fan in relation to its performance then the QuietAir is class leading
Height 115mm 990320845
Zehnder CK300 Rigid Twin Duct, 2 x 158mm x 69mm x 1.5m AX3504 125mm or 5" solid ductingThe Zehnder CK300 rigid twin duct has an extremely low profile and compact design. It is suitable for use with the Zehnder ComfoTube Flat 51 semi rigid manifolds. The smooth, hygienic twin duct is made for air flows of 83. 3 l s (300 m h) at low pressure drops. It measures 65mm high x 326mm wide x 1500mm long. Zehnder P N 990 322 051 (Old Part No 990 322 020)