Best Buy: Simpli Home Artisan Solid Wood 45 inch x 43 inch Contemporary 9 Cube Bookcase and Storage Unit White AXCART21-WH
KALLAX Shelf unit, white, 57 7/8x57 7/8" - IKEA
4-Cube Cubby Shelving | The Container Store
Homfa Storage Organizer, 12 Cube Bookcase with Wooden Frame, Open Closet Standing Book Shelving Cabinet for Living Room, Bedroom, Study Room, Office, 35.8" L x 11.4 W x 47.5 H, White - Walmart.com
Amazon.com: SIMPLIHOME Artisan SOLID WOOD 43 Inch Transitional 9 Cube Bookcase and Storage Unit in White, For the Living Room, Study Room and Office : Home & Kitchen