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Tutorials and FAQs
How to measure your openings
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Materials required: a simple tape measure
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Measurement accuracy: to within 0.4 inch
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Measure at ground level and a height of around 31.5 inches, as explained in the video below:
Note: If your opening is not perfectly parallel, use the widest measurement.

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Installation tips
The regular chamber inflates in two parts for a better seal. When you install your FlowStop, you pre-inflate the top cushion and place it in your opening. Don’t hesitate to force it in, as the seal is designed to absorb tension. Once in place, inflate the bottom part. This inflates the chamber to its maximum, preventing any water from passing through.
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