QBF Low Noise Silent Centrifugal Acoustic Box Fan upto 2150m3/hr 4 5 6 8 10 12"

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QBF Low Noise Silent Centrifugal Acoustic Box Fan upto 2150m3/hr 4 5 6 8 10 12"

Price From: £109.99 inc VAT

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Price From: £109.99 inc VAT
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QBF Low Noise Silent Centrifugal Acoustic Box Fan upto 2150m3/hr 4 5 6 8 10 12"
Quiet Box Fan (QBF) fan design allows for supply and extract ventilation for areas/rooms with high requirements to low noise levels and limited mounting space.

Units can be installed above ceilings or in loft spaces. Suitable for connection with 100 (4"), 125 (5"), 150 (6"), 200 (8"), 250 (10") and 315 (12") mm round ducts.

Sound level and Fan Volume and Wattage

100mm - 240m3/hr - 33 dBA - 63W

125mm - 330m3/hr - 35 dBA - 63W

150mm - 420m3/hr - 36 dBA - 112W

200mm - 730m3/hr - 38 dBA - 170W

250mm - 1300m3/hr - 41 dBA - 173W

315mm - 2150m3/hr - 43 dBA - 221W

Design

The fan casing is made of galvanized steel sheet and provided with heat- and sound-insulating material.

Motor

The centrifugal impeller with back-curved blades is powered by means of 2-pole asynchronous motor with external rotor. The motors are equipped with built-in thermal overheating protection with automatic restart. Motor ball bearings with selective lubricating oil ensure low-noise and maintenance-free operation.

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