The vast majority of ladder accidents are caused by two things: using the wrong ladder for the job and over-reaching. We designed the Little Giant Dark Horse(TM) to help you avoid these common problems. The Dark Horse is the only fiberglass multi-use ladder on the market. Its wide-flared base provides much more lateral stability than straight-sided step or extension ladders, preventing many accidents caused by over-reaching. And because it is constructed with super-lightweight, super-strong, non-conductive fiberglass composite, the Dark Horse is a versatile tool for any job site. You can use the Little Giant Dark Horse in dozens of unique configurations, including A-frame, extension, and 90-degree ladders. It literally replaces several sizes of stepladders and extension ladders and, unlike any other ladder, allows you to work safely on stairs. The Dark Horse Ladder is available in 13, 17 and 22-foot sizes. PART NUMBER MODEL STEPLADDER MAX. HEIGHT STEPLADDER HIGHEST STANDING LEVEL EXTENSION MAX. HEIGHT EXTENSION HIGHEST STANDING LEVEL STORAGE HEIGHT STORAGE DEPTH WEIGHT 15143-001 13 (Type IAA 375) 5' 3' 11' 8' 3' 7" 10" 30 lbs 15147-001 17 7' 5' 15' 12' 4' 7" 10" 39 lbs 15145-001 22 9' 7' 19' 16' 5' 7" 10" 46 lbs