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Hardwood Lumber - Dimensions

Size of hardwood lumber

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Dimensional lumber made from hardwood varies from the sizes used for softwood. Hardwood lumber dimensional sizes are indicated below:

Rough SizeNominal SizeActual Dimension (in)
(Inches)(Fraction In)
("quarter")
S1S1)S2S2)
1/2   3/8 5/16
5/8   1/2 7/16
3/4   5/8 9/16
1 4/4 7/8 13/16
1 1/4 5/4 1 1/8 1 1/16
1 1/2 6/4 1 3/8 1 5/16
2 8/4 1 13/16 1 3/4
3 12/4 2 13/16 2 3/4
4 16/4 3 13/16 3 3/4
  • 1 inch = 25.4 mm

1) S1S - Surfaced one Side

2) S2S - Surfaced two Sides

Common Hardwood Species

  • Oak
  • Walnut
  • Basswood
  • Beech
  • Birch
  • Butternut
  • Chestnut
  • Cherry
  • Elm
  • Gum
  • Hickory
  • Maple
  • Mahogany
  • Yellow Poplar

Hardwood Grades

  • FAS - First and Second
    • best grade - required for a natural or stained finish
    • at least 6 inches wide and 8 to 16 feet long
    • 83.3% clear wood on the worst face
  • Select - No. 1 Common
    • minimum 3 inches wide and 4 - 16 feet long
    • 66.6% clear wood on the worst face
  • Select - No. 2 Common
  • Select - No. 3 Common

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Related Topics

Related Documents

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  • es: madera dura carta dimensiones de la madera
  • de: Laubschnittholz Abmessungen Chart
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