420 SELLINGLUMBER 



longer, but such residue shall not be considered to be of any 

 special stock length, but will represent the balance of the board 

 after the defects as above named have been removed. 



No. 1 Panels must be practically free from defects on both 

 sides and well manufactured. 



No. 2 Panels up to 24 inches long will admit any one of 

 the following defects, which may show on both sides : One 

 small sound knot not to exceed ^-inch in diameter; one small 

 pitch streak; one small pitch pocket, the equivalent of j/g-inch 

 wide and 1/16 of an inch deep; slight sap stain, slight defect 

 in manufacture. Panels over 24 inches long will admit two 

 of the above knots or pitch pockets if not grouped. 



FLOORING. 



Sizes. D AND BETTER, 1x3, 1x4 and 1x6 inches shall 

 be worked to 13/16 of an inch by 2^4, 2^>, 3^4 an d 5% inches. 



1^-inch Flooring shall be worked to 1-1/16 inches thick 

 and 1^-inch Flooring shall be worked to 1-5/16 inches thick, 

 the same width and the same matching as 1-inch stock. 



Lengths. Standard lengths 4 to 20 feet, with not to ex- 

 ceed 5 per cent of 8-foot or 9-foot lengths in mixed length ship- 

 ments of B and Better, and in addition 5 per cent of 6-foot or 

 7-foot in C, D and No. 1 Common, and in addition 5 per cent 

 of 4-foot or 5-foot in No. 2 Common ; No. 3 Common Flooring 

 4 to 20 feet inclusive. 



(The above percentage is allowed in all shipments of mixed 

 lengths, even though the number of feet of each length be specific- 

 ally stated.) 



Grades. A, B, C, D, No. 1 Common, No. 2 Common and 

 No. 3 Sheathing (or No. 3 Common Flooring), Flat Grain; and 

 A, B, C, D and No. 1 Common Edge Grain. 



46. Special. Defects named in Flooring are based upon a 

 piece manufactured from 1x4 12 feet, and pieces larger or 

 smaller than this will take a greater or lesser number of de- 

 fects, proportioned to their size on this basis, except that stand- 

 ard knots shall not exceed 1 ^-inches in diameter in 3-inch 

 Flooring. 



47. "A" FLAT FLOORING must be practically free from 

 defects on the face side and well manufactured. 



