Knotty Alder is a product of nature and will include numerous color hues, grain patterns, acceptable defect and other natural characteristics. Acceptable defects can include solid knots, crater knots, open knots, soft knots, pin knots, sapwood, worm holes, worm tracking, bird pecks and other natural characteristics as defined by industry standards. Customers should expect knots and defects to be found at random within door and drawer fronts. Quantity and frequency of defects will vary from many to few.