There is no doubt about it, that extracted air is better than recirculating air and this new award winning ducting valve will stop any backdraft coming back into your kitchen or bathroom.

This self-opening valve, will open and close when your extractor is turned on or off, this will save on any cold air returning back into your room.

No electrical connection is necessary and it will simply fit inside our 150mm round ducting pipe.

If your house is prone to windy conditions, then this new unit will put an end to noisy flapping outside vents, thus also preventing the cold air returning back into your kitchen too.

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Thermo Box 150mm Cartridge

  • £74.95

  • Ex Tax: £62.46

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Tags: thermobox, compair ducting, naber ducting, 150mm ducting, airtight vent, selfseal vents