Color: Heartwood is yellowish tan to light brown. Sapwood is tan to white. Heartwood may be confused with that of Southern yellow pine. Radical color change upon exposure to sunlight.
Grain: Normally straight, with occasional waxy or spiral texture. Nearly all fir flooring is vertical-grain or riftsawn clear-grade material.
Hardness/Janka: 660 (49% softer than Northern red oak).
Dimensional Stability: Above average (7.3; 15% more stable than Northern red oak).
Origin: North America