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The night vent fasteners are screw fitted, which saves time. There is no need for trickle vents.
The fasteners will screw to a mullion on a 20mm flat closed positions with a large headed allen key. The nylon washer behind the handle is designed to reduce friction.Available in RH or LH.Supplied with necessary fixing screws. To be used in conjunction with Monkeytail Stays 33631, 33632.
0208 123 1911 
