Face Grades

A Grade

B Grade

C Grade

D Grade

Birch, Ash, Maple and Poplar: Rotary-Cut, Plain-Sliced

Pin Knots and Small Burls, Comb. Avg.

ANSI

10- 4 to 1/4"

16- 8 to 1/4"

No Limit

No Limit

Conspicuous Burls, Max.

ANSI

3/8"

1/2"

No Limit

No Limit

Sound and Repaired Knots in Comb

ANSI

No

4

8

10

Repaired Knots

ANSI

No

4 to 1/8"

4 to 1/2"

5 to 3/4"

Mineral Streaks

ANSI

Slight

Slight

Yes

Yes

Vine

ANSI

Slight

Yes

Yes

Yes

Rough Cut

ANSI

No

Slight

Two 8" Areas

5% of Panel

Blended Repaired Tapering Hairline Splits

ANSI

Two 1/16" x 6"

Four 1/8" x 8"

Four 3/16" x 8"

Six 1/4" x 10"

Face Grades

A Grade

B Grade

C Grade

Red and White Oak: Rotary-Cut, Quarter-Cut, Plain-Sliced

Pin Knots and Small Burls, Comb. Avg.

ANSI

12- 10 to 1/4"

24- 16 to 1/4"

No Limit

Sound and Repaired Knots in Comb

ANSI

No

4

8

Repaired Knots

ANSI

No

4 to 1/8"

4 to 1/2"

Mineral Streaks

ANSI

Slight

Few to 8"

Yes to 12"

Sap

ANSI

5%

Up to 20%

Yes

Blended Repaired Tapering Hairline Splits

ANSI

Two 1/16" x 6"

Four 1/8" x 8"

Four 3/16" x 8"

Back Grades

1 Back

2 Back

3 Back

4 Back

Sound Tight Knots

ANSI

16 to 3/8"

16 to 3/4"

Max 16 1/2"-1 1/2

Yes

Knotholes

ANSI

No

All Repaired

All 3/8" 10 to 1

Up to 4"

Repaired Knots

ANSI

No

8 to 1/2"

Not

No

Sound Tight Burls

ANSI

Yes

Yes

Yes

Yes

Mineral/Sap

ANSI

Yes/Yes

Yes/Yes

Yes/Yes

Yes/Yes

Rough Cut

ANSI

Two 8" Dia. Areas

Yes

Yes

Yes

Joints or Splits

ANSI

Six 1/8" x 12" Rep’rd

Six 3/16" x 12” Rep’rd

3/8" x 1/4" LOP

1" to 1/4 LOP, 1/2" to 1/2 LOP, 1/4" to Full LOP