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Starting at: £33.00 up to £35.00 for 6 products
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These retrofit trickle vent kits can be added to our Master & Elite Bifolds providing background ventilation by letting a small amount of air through a routed slot in the door. This helps prevent condensation, mould growth and a build-up of pollutants inside the room, whilst the canopy fitted to the outside protects against bad weather.