Fasteners Inc - Ladder Length Guidelines

Ladder Length Usage Guidelines

STEP LADDER HEIGHT SELECTION GUIDE		EXTENSION LADDER LENGTH SELECTION GUIDE
STEPLADDER SIZE	APPROX. HIGHEST STANDING LEVEL		LADDER SIZE	MAXIMUM EXTENDED LENGTH	*WORKING RANGE TO TOP SUPPORT	*MAXIMUM ACCESSIBLE ROOF HEIGHT RANGE
4'	1' 11"		16'	13'	7-1/2' - 12 1/2'	4-1/2 - 9-1/2'
5'	2' 10"		20'	17'	9-1/2 - 16-1/2'	6-1/2 - 13-1/2'
6'	3' 9"		24'	21'	11-1/2 - 20'	8-1/2 - 17'
7'	4' 9"		28'	25'	13-1/2 - 24'	10-1/2 - 21'
8'	5' 8"		32'	29'	15-1/2 - 28'	12-1/2 - 25'
10'	7' 7"		36'	32'	17-1/2 - 31'	14' - 28'
12'	9' 6"		40'	35'	19' - 33-1/2'	16' - 30-1/2'
14'	11' 5"		44'	39'	21' - 37-1/2'	18' - 34-1/2'
16'	13' 4"		48'	43'	23' - 41-1/2'	20' - 38-1/2'
18'	15' 3"		60' (3 section extension)	48'	23' 46-1/2'	20' - 43-1/2'
20'	17' 2"		*When set up at the proper 75-1/2° angle