This is standard for tabletops custom made from wide boards.
Wood quality standard for AB tabletops
- Lamell width is from 80 mm to 140 mm,
- «A» side: stable colour, no cracks, no putty, no sapwood, several live knots are available(up to 15-20 mm in diameter), 1-2 black knots are available (up to 10 mm),
- «B» side: colour could be different, could be used putty, could be small sapwood, number of the knots could higher than at «A» side

AB tabletop
Wood quality standard for Wild tabletops
- Lamell width is from 80 mm to 140 mm
- No sapwood
- Cracks, black knots are available, but all are putty with a special wax
- The number of the knots is not limited

Wild tabletop
Other quality standards are negotiable but impact the price of the tabletop.