Mammoth S-Max EC Inline Fan – Quiet, Powerful & Energy Efficient Ventilation. ✔️ Mammoth S-Max 6" Inline Fan. ✔️ Mammoth S-Max 8" Inline Fan. With a robust but lightweight aluminium body lined with sound-dampening foam, the fan runs at whisper-quiet levels – as low as50dB, like a quiet office.
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