THE PRO SERIES IS LITTLE GIANT LADDER SYSTEM'S HOMAGE TO THE TRADESMEN AND PROFESSIONALS WHO HAVE HELPED MAKE THE LITTLE GIANT LADDER WHAT IT IS TODAY. THE PRO IS TRULY THE PRO LADDER USER'S "POWER TOOL." IT IS CONSTRUCTED WITH HEAVY WALL, AEROSPACE-GRADE ALUMINUM AND THE HIGHEST QUALITY PRACTICES TO WITHSTAND DAILY HEAVY DUTY USE. THIS IS NO DO-IT-YOURSELFER'S LADDER. THE TRIPLE-LOCK HINGES AND TELESCOPING SIDES ALLOW YOU TO USE THE PRO SERIES ALMOST ANYWHERE, INCLUDING STAIRCASES, SLOPING GROUND, RAMPS, AND OTHER UNEVEN SURFACES. YOU CAN USE THE PRO SERIES MODEL 17 10102BP IN UP TO 24 UNIQUE CONFIGURATIONS AS AN A-FRAME, EXTENSION, STAIRCASE, AND 90-DEGREE LADDER AND AS A FOUR-LEVEL TRESTLE-AND-PLANK SCAFFOLDING SYSTEM. BLACK ANODIZED ARMOR PREVENTS STAINING AND OXIDATION, AND HIGH-IMPACT RUNG GUARDS GUARANTEE THAT THIS PRODUCT IS GOING TO LAST. EACH PRO SERIES IS INDIVIDUALLY SERIALIZED FOR TOOL TRACKING AND THEFT DETERRENCE. THE PRO SERIES MODEL 17 EXCEEDS ALL OSHA AND ANSI STANDARDS FOR LADDERS, IS RATED TO HOLD UP TO 300 LBS, AND IS BACKED BY A LIFETIME WARRANTY.