Ikea makes a few things really well, and these bookshelves are one of them--we always get compliments on them and folks are shocked to find out they're Ikea.
Make is the FJÄLKINGE, and there are 3 of them side by side with metal grips that turn them into a full unit. Each measures 46 1/2x13 3/4x76.
Were professionally installed, and will likely need to be taken to their new home/transported assembled (the 3 units come apart, however). Local pickup only; we're in Bed-Stuy, Brooklyn.