Lockable Whitco window winder.Suitable for timber and aluminum awning windows with butt or hook hinges or non friction stays.Lockable chain operated window winder.Suitable for timber or aluminum awning windows.Smooth operation.Foldable handle knob.Through fly screen operation.Push button to lock, key to unlock.Can be wound closed when locked.Less than 1 mm between locking points.Hooded sash bracket prevents chain being disengaged from sash.Maximum opening 300 mm (19 turns to fully open).Maximum weight of sash 15kg.Zinc diecast body and mechanism.Zinc plated steel base plate.Passivated zinc steel chain.Standard and one way fixing screws supplied.Restriction clip (included) is required to restrict the winder to either 100 mm or 150 mmFinished in black
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