Space-saving aluminum ladder folds to just 3-1/2" x 4-1/2"! Sturdy aluminum rungs fold up inside the heavy-duty side rails. Easy to use – open ladder, snap down red latches under bottom rung and it's ready to use. Completely assembled. Supports up to 250 lbs. 6' ladder weighs just 22 lbs.
http://www.youtube.com/view_play_list?p=4B01B4E41D813713