Which wood is pale yellow and virtually knot-free, suitable for windows and doors (structural carpentry)?

• A. Parana Pine
• B. Scots Pine
• C. Redwood
• D. Yellow Cedar

Answer: (A)

When selecting timber for windows and doors, you want a softwood that stays light in color, is nearly knot-free, and can be machined and finished cleanly with reliable strength. Parana Pine fits this combination perfectly: its timber is pale yellow, with very few knots, and a straight grain that planes smoothly and holds fasteners well. This makes it ideal for door and window frames where a neat appearance and good dimensional stability are important. The other options don’t match all these qualities as consistently—Scots Pine typically has more knots, Redwood tends to be redder in color, and Yellow Cedar, while pale, isn’t as commonly chosen for structural carpentry in windows and doors.