*** This package includes 36 sheets Baltic Birch Plywood. *** 1/4" or 6mm thick. *** Actual Measurements: 4" x 6". *** The highest quality Grade B/BB Baltic Birch Plywood Sheets. *** This B/BB-grade hardwood made from top-quality Baltic Birch. The face veneer features a beautifully smooth and clean surface that is free from knots, plugs, and open cracks or splits, while the back surface typically has 1-2 small color-matched patches. *** The smooth surface of the face side allows for convenient painting, stenciling, staining, and wood burning, perfect for laser cutting; engraving; carving. *** USPS Priority mail, will be delivered in 1-3 Days.