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Plywood veneers for general purposes are graded from A grade being the top clear grade to D grade being the bottom or lowest. B grade is slightly lower than A. C grade has any knots, splits, etc filled and is then sanded. D grade can have open knots and splits and can be unsanded.
The face grade of plywood is always the first designated: AA has two A grade faces AD has an A grade face and a D grade back S Selected grade, equals or betters B grade BB has two B grade faces CD has a C grade face and a D grade back DD has two D grade faces Grade CharacteristicsA High quality face, suitable for clear finishing B High quality surface suitable for painting S High quality surface suitable for painting C Non appearance grade with a solid face, not meant to look attractive D Low appearance grade with permitted defects PG Non-structural, for packing use, unsanded rough appearance |