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![Trickle Ventilators for Aluminium Patio Doors](https://images.findtheneedle.co.uk/findtheneedle/products/17048291.jpg)
If trickle vents are required a 42mm high frame extender will be supplied for fitting on top of the outer frame head profile.
For more information on Trickle Ventilators for Aluminium Patio Doors talk to Folding Doors 2 U
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