Checks - seasoning checks not limited. Through checks at ends are limited as splits.

Knots - not limited as to quality but are well spaced and are permitted in the following sizes or their equivalent displacement:

Shake - surface shakes permitted. If through at edges or ends, limited as splits. Elsewhere, through shakes 1/3 the length, scattered along the length.

Skips - hit or miss, with a maximum of 10% of the pieces containing heavy skips.

Slope of Grain - 1 in 4.

Splits - equal to 1/6 the length of the piece.

Stain - stained wood, not limited.

Unsound Wood - spots or streaks limited to 1/3 the cross section at any point along the length. Must not destroy nailing edge.

Wane - 1/2 the thickness and 1/2 the width full length or equivalent on each face, provided that wane not exceed 7/8 the thickness or 3/4 the width for up to 1/4 the length.

Warp- medium.

White Speck & Honey Comb - firm.

*holes maximum permission: one hole or equivalent smaller holes per 1 lin. ft.

Manufacture - Standard “F” Manuacture admits: very heavy torn grain; raised grain; very heavy loosened grain; heavy machine bite; machine gouge; heavy machine offset; chip marks; knife marks; medium wavy dressing; medium mismatch.

Pitch & Pitch Streaks - not limited.

Pockets - pitch or bark, not limited.