ANSI Plywood Grading Standards & Descriptions

FACE GRADE: Applications

A

Where excellent appearance is very important as in cabinets and furniture.

B

Where the natural characteristics and appearance of the species are desirable.

C
D

Provide sound surfaces but allow unlimited color variation. Repairs in increasing size ranges allowed respectively from C to D. Suitable for applications where surface will be hidden or a more natural appearance is desired.

BACK GRADE: Descriptions

1
2

Provide sound surfaces with all openings in the veneer repaired except for vertical worm holes not larger than 1/16.”

3

Some open defects. Repaired splits, joints, bark pockets, laps and knotholes can achieve a sound surface if specified by the buyer.

4

Some open defects. Knotholes up to 4″ in diameter are permitted. Open splits and joints limited by width and length.

FACE GRADES: Birch | Ash | Maple | Poplar

Veneer: Rotary-Cut | Plain-Sliced | Quarter-Cut

Pin Knots & Small Burls Combined AverageConspicuous Burls MaximumSound & Repaired KnotsRepaired KnotsMineral StreaksVineRough CutBlended Repaired Tapering
A
MAX 10 (4 UP TO 1/4″)3/8″NONOSLIGHTSLIGHTNOTWO 1/16″ X 6″
B
MAX 16 (8 UP TO 1/4″)1/2″44 TO 1/8″SLIGHTYESSLIGHTFOUR 1/8″ X 8″
C
NO LIMITNO LIMIT84 TO 1/2″YESYESTWO 8″ AREASFOUR 3/16″ X 8″
D
NO LIMITNO LIMIT105 TO 3/4″YESYES5% OF PANELSIX 1/4″ X 10″

FACE GRADES: Red and White Oak

Veneer: Rotary-Cut | Plain-Sliced | Quarter-Cut

Pin Knots & Small Burls Combined AverageSound & Repaired KnotsRepaired KnotsMineral StreaksSapBlended Repaired Tapering Hairline Splits
A
MAX 12 (4 UP TO 1/4″)NONOSLIGHT5%(1)TWO 1/16″ X 6″
B
MAX 24 (16 UP TO 1/4″)44 TO 1/8″FEW TO 8″UP TO 20%(2)FOUR 1/8″ X 8″
C
NO LIMIT84 TO 1/2″YES TO 12″YESFOUR 3/16″ X 8″

(1) No sap allowed in Rift, Comb, and P/S; Allowed in Rotary White Oak
(2) Rotary Red Oak; 10% sap allowed in Rift, Comb, and P/S; Any sap allowed in Rotary White Oak

BACK GRADES

Sound Tight KnotsKnotholesRepaired KnotsSound Tight BurlsMineral/SapRough CutSplits or Joints
1
MAX 16 (UP TO 1/4″)NONOYESYES/YESTWO 8″ DIA. AREASSIX 1/8″ X 12″ REPAIRED
2
MAX 16 (8 UP TO 1/4″)ALL REPAIRED8 TO 1/2″YESYES/YESYESSIX 3/16″ X 12″ REPAIRED
3
MAX 16 (8 UP TO 1/4″)ALL 3/8″ TO 1″NO(1)YESYES/YESYES3/8″ X 1/4 LOP
4
YESUP TO 4″NOYESYES/YESYES1″ TO 1/4 LOP, 1/2″ TO 1/2 LOP, 1/4″ TO FULL LOP

(1) May be obtained repaired, if specified
LOP = Length Of Panel