Thw measuring process was very easy and user friendly. There was always someone you could reach out to at any time for help and advice. The inserts were simple easy to install (although you might need another hand if the size is big). They look great as it is clear and does not spoil the view. The noise reduction is as they claim buy I wish the noise reduction was more but I have ordered another set to put a double insert in order to further reduce the noise.
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