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Thank you for purchasing the Little Giant Alta-One—one of the 

lightest multi-use ladder on the market. When used correctly, 

the Little Giant Alta-One is the strongest, safest, most versatile 

ladder in the world. Little Giant Ladder Systems subjects each 

ladder  to  comprehensive  tests  for  safety  in  design  and 

construction,  so  you  can  trust  it  in  all  the  work  you  do.  In 

addition,  the  Alta-One  meets  or  exceeds  stringent  OSHA  and 

ANSI safety standards.

Please  don’t  ignore  the  instructions!  Make  the  most  of  your 

ladder system by learning how to use it safely. If you have any 

questions  about  how  to  operate  your  Little  Giant  Alta-One, 

please call us. We value our customers, and we’re happy to help.

Customer Service: 

800-453-1192

Little Giant Ladder Systems  •  1198 N. Spring Creek Place  •  Springville, UT 84663

USER INSTRUCTIONS

TYPE I 250 LBS RATED

GETTING TO KNOW YOUR LADDER

The Alta-One is made up of three major components: one inner ladder assembly and 
two outer ladder assemblies that telescope over the inner. The inner and outer 
assemblies work together with the Triple-Locking hinge and the lock tabs to adjust 
the ladder into different lengths and positions, including an A-frame or stepladder, an 
extension ladder, a staircase ladder, a 90-degree ladder and trestles for scaffolding. 
Each rung has slip-resistant treads, and each leg is equipped with rubber feet for 
improved traction.
 

Inner and Outer Assemblies

. When the ladder is in its storage position, the inner 

assembly remains inside the outer assembly. To raise the ladder’s height, simply 
release the lock tabs and telescope the inner assembly upward and then 
lock it in place at the desired height using the lock tabs on each side of 
the ladder. To lower the height again, telescope the inner assembly 
back into the outer.

Triple-Locking Hinge

. The hinges are located at the 

top of the ladder on each side when in the storage 
position. The hinges unlock so you can adjust 
the ladder into different working positions. To 
Understand how the hinges work, follow the 
instructions on back to adjust the ladder from 
its storage position and into a working 
position.

Work Platform

 (optional). The versatile 

Work Platform fits on the rungs of any 
Little Giant multi-use ladder and is rated 
to hold up to 250 lbs. Use it as a tray for 
a paint bucket or tools, or use it as a 
sturdy, comfortable standing platform. 
Now you can stand on your ladder for 
extended periods without sore feet and 
bruised shins, and you can work with 
both hands in any direction. The Work 
Platform also serves as a stabilizing 
spreader bracket for your Little Giant 
Alta-One’s trestle-and-plank scaffold-
ing system.

MODEL SPECIFICATION TABLE:

MODEL

Model 13
Model 17
Model 22

STORAGE

3' 7"
4' 7"
5' 7"

A-FRAME

3' to 5'
4' to 7'
5' to 9'

EXTENSION

7' to 11'
9' to 15'

11' to 19'

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