How to retrofit or install a window vent, trickle vent to a

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For some windows, gusts of wind are capable of forcing the trickle vent open resulting in a noticeable draft what size are the slots in the

They come in a range of colours and sizes to suit all uPVC windows regardless of age Drilling the holes for your trickle vent First lets open the trickle slot Find out how to easily retrofit a trickle vent to your door with our step by step video to guide you

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