What is a library ladder and what bookcase systems support it?

A library ladder is a rolling or sliding ladder mounted on a horizontal rail track anchored near the top of a high bookcase wall, allowing access to shelves above 72 in. without a separate stepladder. Library ladders require bookcases or rails rated for the rolling load (typically 250–300 lbs.) and must have continuous hardwood or metal rail sections. OfficeFurniture2go.com can discuss library wall systems with ladders — call 1-800-460-0858.