Buy Montessori Materials for Home The mainboards are Medium-density fiberboard. This is an open back shelf The Shelving board can be adjusted to your preferred height (low or high or middle). • Dimension: 48"W x 15"D x 35.5"H or 122 x 38 x 90cm • Includes caster wheels • Assembly required View More: https://kidadvance.com/furniture.html