Understanding the UL Fire Resistance Directories - Ron Blank ...
Understanding the UL Fire Resistance Directories - Ron Blank ...
Understanding the UL Fire Resistance Directories - Ron Blank ...
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<strong>Understanding</strong> <strong>UL</strong><strong>UL</strong> Design U4113. Batts & <strong>Blank</strong>ets-Mineral wool or glass fiber batts partially or completelyfilling stud cavity. Fasten each batt to wallboard base layerwith a min 9/16 in. long staple. Use five staples for each 4ft. piece. Drive one staple in <strong>the</strong> center of each piece anda staple at Each corner, approx. 3 in. from edge.* See Batts & <strong>Blank</strong>ets category for names of manufacturers.