Thanks to all of our customers who have given us suggestions for a solid back bookcase! An excellent version that is all solid wood (no MDF/particle board/plywood). The warm cherry wood and versatile style blends with almost any décor. Store books, media, and toys; display pottery, plants, framed pictures, baskets, candles, etc. Truly a beautiful piece for any room. 20" unit includes 2 shelves, 2 end panels, 1 back panels and 8 pegs. 34" unit includes 3 shelves, 2 end panels, 2 back panels, and 12 pegs. 42" unit includes 4 shelves, 2 end panels, 3 back panels and 16 pegs. Ships flat, assembly required. No tools or metal hardware needed. Best if two adults assemble together. Dimensions of 20" Unit: 40" L x 20" H (16" H to top shelf) x 10 1/2" overall bookcase depth Inside Assembled Shelf Dimensions: 36" L x 10 5/16" D x 10 1/4" H Dimensions of 34" Unit: Dimensions: 31 3/4" L x 34 1/2" H (30 1/4" H to top of shelf) x 13" overall bookcase depth Inside Assembled Shelf Dimensions: 28" L x 10 5/16" D x 11 3/4" H Dimensions of 42" Unit 39 3/4" L x 41 1/2" H (37 1/4" H to top shelf) x 13" overall bookcase depth Inside Assembled Shelf Dimensions: 36" L x 10 5/16" D x 10 1/16" H Materials: Cherry Hardwood Finish: Three BEEautiful Bees All Natural Beeswax Polish Care: This product has a light finish on it made from organic jojoba oil and local beeswax. Periodic reconditioning may be needed to keep the wood looking new depending on use and household dryness. Made in USA Recommended for Ages: 3 and up Made with Camden Rose's signature super-soft, rounded-over edges, creating a gentle look and feel.