Ply wood is normally available

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Ply wood is normally available Answer: 3 to 4 mm thick

Plywood is typically available in large sheets, most commonly 4x8 feet, in various thicknesses (from thin decorative to thick structural), and different grades (A, B, C, D, etc.) for uses like construction sheathing, furniture, cabinets, and marine applications, often identified by species (birch, hardwood, softwood) and glue type (WBP for waterproof).