Correction part for the Walthers Blast Furnace Dust Collector. Walthers collector has the downcomer entering the top and exiting out the side. This is not prototypical for the majority of dust collectors (as seen in the Becher Blast Furnace book). This part corrects this, with the downcomer entering on an angle at the bottom, from the side. Sized to fit Walthers Downcomer tubing. HO. Printed in ABS-Like Siraya Tech Fast Navy Grey.