12.0" diameter acrylic chamber fits all FreeZone Freeze Dryers. Provides visibility for bulk freeze drying. Accommodates Tall Product Shelves (7317200). Includes clear acrylic lid with gasket, cap for vacuum port, vacuum release valve and pass through for electrical cords. 8" diameter opening to collector on bottom of chamber. Will fit 10.12" or 14.0" diameter condensers.