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Yale SlotVent Trickle Vent Designed and developed in the UK, the Yale trickle vent SlotVent allows an appropriate amount of air to pass through the window,

Window Trickle Slot Vent 407mm Brown for uPVC Double Glazing & Timber Windows 0586 Brand new We've put together a brief guide to save you losing your head over them What is A Trickle Vent? In basic terms, when a window is manufactured, a slot is

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