Level Up Your Carpentry Skills 2026 – Nail the Precision Exam with Confidence!

D-grade plywood is characterized by its allowance for large flaws and knots, which can be up to 2.5 inches in diameter. This grade is typically used where appearance is not the primary concern, such as for structural applications or where the plywood will be covered. The inclusion of larger flaws and knots means that while it can still retain some structural integrity, it will not have the same aesthetic or functional qualities as higher grades, which have fewer imperfections. The presence of significant defects is indicative of the lower quality of this grade, making it suitable for projects where the visual appeal and smoothness of the surface are not critical.