Text equivalent
Overall width
The complete cross-section width.
Engagement / overlap
The portion that does not add new coverage.
Effective coverage
Overall width minus the documented deduction.
Example: 140 mm overall minus a 10 mm coverage deduction gives 130 mm. A 3,000 mm run needs ceil(3,000 / 130) = 24 full courses. This excludes layout gaps and cutting waste.
Download diagram (SVG)Original educational diagram · Hardwood Profiles · September 14, 2026.