1 Kings 6:34
And the two doors were of fir tree: the two leaves of the one door were folding, and the two leaves of the other door were folding. And the two doors were of fir tree: the two leaves of the one door were folding, and the two leaves of the other door were folding.
This detail belongs to the account of the construction of Solomon's temple, and the folding doors of fir wood were part of that temple structure. The temple was erected as Israel's sanctuary in place of the wilderness tabernacle. It was built according to God's directions.
Though permanent and larger than the tabernacle, it preserved the tabernacle's proportions and had similar furnishings. It was distinguished by its richness, beauty, and costly design. In its materials and workmanship it stood as the most magnificent building of its time.