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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,

Designed and developed in the UK, Yale's SlotVent provides an effective through frame background ventilation solution, allowing fresh air in and stale air out

playstar slot ทดลองเล่น What is A Trickle Vent? In basic terms, when a window is manufactured a slot is drilled into the plastic frame and a cover is placed over it

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