Highlight and divide books by subject with colorful book supports; use with wooden shelves Book supports are made from 1-piece molded polystyrene to firmly support books upright. Fits shelves up to 1" thick. Use plain base for wooden shelves. Label holders, angled (part number LC100) and flat (part number LC200) are available and sold separately.Labels (part numbers: LC100L-24, LC30L-24 and LC50L-24), are available and sold separately.Available in 8 colors: -01 black, -02 blue, -08 desert sand, -18 red, -25 yellow, -31 clear, 48 putty, -132 royal blue.To view color choices, simply click on the Additional View button located above.Overall dimensions: Part Number H x W x D 48-400 6 1/2 x 1 1/2 x 8 1/4" LC100 6 x 1 1/2 x 8" LC200 6 x 1 3/4 x 3/8"