All mattresses require good even support, to give you the support you need, for a great nights sleep. But sometimes we don't want to add additional height to your mattress, therefore we offer engineered base boards that are 0.5” thick. This MDF Platform Base will sit on top of your Glideaway steel bed slats (wood slats for Twin) and underneath your mattress. Giving you a well supported mattress base without adding unnecessary height.