Low Frequency Ceramic Purification Plates For (EcoQuest/Vollara/Alpine) This Ozone Plate Is For Eagle 5000 EcoQuest/Vollara/Alpine Also Works With Breeze AT EcoQuest/Vollara/Alpine The Classic Unit From EcoQuest/Vollara/Alpine The XL15 From EcoQuest/Vollara/Alpine This Is The Ceramic Plate Replacement Part For Those Unit ONLY ( This Plate Will Not Work With High Frequency Units)