Leaking window vent

window slot vent   Dan window slot

Slot size: 390mm x 16mm EA

When placed in the top of a casement frame, a trickle vent will serve that purpose; providing a small opening that allows air to filter through the closed 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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