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Sources: American Wood Council, NDS 2005, Table 11.2 A, 11.3.2 A
<br />Notes:
<br />1) Thread must be embedded in a rafter or other structural roof member.
<br />2) See IBC for required edge distances.
<br />IMPORTANT: To maintain waterproofing it is important that the aluminum flashing (item 1) is properly placed under one full course above the mounting block with at least 1/2" of the flashing
<br />extending up under an additional course above (3rd course). The bottom of the flashing should never overhang the shingle drip edge. See instructions on back.
<br />Lag pull-out (withdrawal) capacities (lbs) in typical lumber:
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