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Dura
Technology exceeds ASTM industry impact standards by an average of 50%
Royal even freezes its siding to 32°F to simulate harsh weather and
then performs the same royal impact test. Most North American vinyl
siding manufacturers are not required to meet this grueling test
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|
Dura
Technology exceeds ASTM industry impact standards by an average of 50%
Royal even freezes its siding to 32°F to simulate harsh weather and
then performs the same royal impact test. Most North American vinyl
siding manufacturers are not required to meet this grueling test
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