Econofrost woven aluminum night covers conserve electrical energy on open refrigerated displays and freezer cases and provide significant savings in reduced shrink and discard. Also referred to as "night blinds" or "night curtains," night covers provide an economical way to shield refrigeration cases and protect perishables foods from ambient store heat and light. Simple to install and easy to use, Econofrost night curtains are the preferred night cover among major leading retailers.