3.4.2.1 Alternate. When specified (see 6.2), lead sheet in ordered weights over 3-1/2 pounds per square foot shall not vary in thickness by more than plus 1/32 inch and minus 0 inch.
3.4.3 Width and length. Lead sheet in rolls (see 3.5) shall not vary from the ordered width by more than plus or minus 1/4 inch and the ordered length by more than plus or minus 1/2 inch. Unless otherwise specified, grades C and D lead sheet in flat lengths shall not vary from the ordered width and length by more than plus or minus 1/4 inch (see 6.2).
3.5 Form. Unless otherwise specified in the contract or order, lead sheet shall be furnished in rolls. When specified (see 6.2), flat lengths shall be furnished.
3.6 Identification marking. Lead sheet (grades C and D only) 1/2-thick and over shall be marked along one edge using constantly recurring symbols
with a non-water soluble ink or paint. These symbols shall include the federal specification symbol, grade, the manufacturer's name, brand, or trademark and
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