WS359-20 uPVC Door/Window Seal – Deformed/Flattened Bubbles Throughout the Seal Unfortunately, the seal has deformed or flattened bubbles at regular intervals, roughly every 12 inches along the seal. I received a replacement from the seller, but unfortunately it had the same problem. The seal is unevenly coiled and tightly packed inside the small round box, which I suspect may be causing the bubbles to deform. I’m disappointed with the overall quality and would recommend that buyers be aware of this issue.

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