Unbranded Underlayment 1/4-in Common Sumauma Plywood Underlayment, Application as 4 x 4

This 4x4 sheet of Sumauma plywood is perfect for underlayment, paneling, millwork, furniture, shelving and cabinetry. It is very versatile. These panels have been repaired and sanded on both sides. The face is generally light and even in color, with small pin knots and streaks. The inner ply has no open defects. The fully exterior phenolic resins are used to make the panels suitable for temporary exposure to weather.