Matching rule reminder
Smallest class with maxLen ≥ support + 3.
Details
Straight extension · load rating · three points of contact · no top steps.
Reference
Ladder reach reference
Worked support-height examples and class checks for common US telescoping ladder screens.
8 ft support → 13 ft class
8 + 3 = 11 ≤ 13 → 13 ft.
Details
Enter support_height_ft 8.
12 ft support → 17 ft class
12 + 3 = 15 → 17 ft.
Details
Enter support_height_ft 12.
16 ft support → 20.5 ft class
16 + 3 = 19 ≤ 20.5 → 20.5 ft.
Details
Enter support_height_ft 16.
18 ft support → NO_MATCH
18 + 3 = 21 > 20.5 → NO_MATCH.
Details
Do not force a 20.5 ft class alone.
Browse all resources
Guides, calculator, and comparisons.
No resources match. Try another term.