The grade of plywood used for cabinets can vary depending on the manufacturer and specific application. However, the most commonly used grade of plywood for cabinets is typically A-1 or A-2.
Here's a brief explanation of plywood grading:
A-1 Grade Plywood: A-1 grade plywood is the highest quality plywood available. It has a smooth and sanded surface on both sides, free of any knots, voids, or defects. This grade of plywood is generally used for visible surfaces in high-end cabinetry and furniture.
A-2 Grade Plywood: A-2 grade plywood is also of high quality but may have slight imperfections or minor knots on one or both sides. These imperfections are typically limited and don't affect the overall structural integrity. A-2 grade plywood is commonly used for cabinet parts that might not be as visible, like cabinet sides or shelves.
B Grade Plywood: B grade plywood has a few more imperfections and knots compared to A-grades. It is often used for cabinet backing or hidden areas that won't be seen, as it still provides decent strength and stability.
C Grade Plywood: C grade plywood has more noticeable knots and defects. It is suitable for rough construction or projects where appearance is not a primary concern.
D Grade Plywood: D grade plywood is the lowest quality and has numerous knots, voids, and defects. It is typically used for structural purposes where appearance is not a consideration.
For cabinet construction, A-1 or A-2 grade plywood is preferable, as it provides a smooth and attractive surface for visible parts of the cabinets while still offering good strength and durability. It's worth noting that plywood used for cabinets may also have different veneer options, such as birch, oak, maple, or cherry, which can impact the overall appearance and cost.