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Cement Board Construction - USG
revisions and possible changes.All D UROCK Brand Cement Board Products meet ASTM Standard E136 for noncombustibility. UL listed 34L2. DUROCK Brand 1. Steel framing must be 20-ga. or heavier. Cement Board Limitations 2. Systems using DUROCK Brand Exterior Cement Board are designed for positive or negative uniform loads of up to 2.4 kPa (50 psf ...
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