Birch plywood grades

"B" grade

Practically without defects. Discoloration is allowed up to 15% of a sheet surface, loose knots and knotholes sized up to 5 mm are allowed up to 3 per square meter.

For transparent and semi-transparent finishing, lacquering and toning

"E" grade

Practically without defects. Discoloration is allowed up to 30% of a sheet surface, loose knots and knotholes sized up to 5 mm are allowed up to 3 per square meter.

For transparent and semi-transparent finishing, lacquering and toning.

"BB" grade

Discoloration is allowed up to 70% of a sheet surface, loose knots and open defects are patched, patches should match surrounding grain direction and color.

For paint and semi-transparent finishing, for facing with veneer of precious wood species.

"CP" grade

Discoloration and patches are allowed without limits, putty repair is allowed.

For non-transparent finishing and film-facing or painting.

"C" grade

Open defects of wood structure and processing defects are allowed.

For construction purposes when exterior of a sheet does not matter, for packaging.