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Kingspan GreenGuard XFP38 Fanfold Underlayment

Best choice ⅜” Thick XPS Underlayment with Premium Facers

Configured in fanfolded bundles 4’ x 50’ with cut-n-fold hinges which improves its ability to lay flat. It is lightweight, easy to cut, and install.

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GreenGuard XP38 Fanfold Underlayment

Premium level ⅜” XPS fanfold with our best facers, cut-and-fold hinges

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