Boraam 80100 Techny Collection Calder Hollow Core Bookcase, Espresso Ready To Assemble construction (RTA): all tools are included making assembly easy as 1, 2, 3! Camlock construction; screw holes are not visible once assembled 10 cubicals; 5 shelves divided into 2 columns Each shelf can hold up to 70 pounds; 700 pound total weight limit when weight is evenly disbursed Double V-cut method used when veneering; provides smooth rounded edges and prevents premature wear