Comparison : Item # 3222-04, Jacketed Distillation Head, 10/18 Thermometer Joint, 14/20 Lower Inner Joint, #1 Hose Connection, 105mm Overall Height x 105mm Overall Width
Item # 3222-06, Jacketed Distillation Head, 10/30 Thermometer Joint, 24/40 Lower Inner Joint, #1 Hose Connection, 200mm Overall Height x 150mm Overall Width
Item # 3222-08, Jacketed Distillation Head, 10/30 Thermometer Joint, 24/40 Lower Inner Joint, #1 Hose Connection, 200mm Overall Height x 150mm Overall Width