Ideal 177540 Expansion Vessel Kit

Ultra System 30 – (GC No. 41-002-04). Ultra System 24 – (GC No. 41-002-03). Ultra System 18 – (GC No. 41-002-02). Ultra System 15 – (GC No. 41-002-01). Ultra Combi 35 – (GC No. 47-002-02). Ultra Combi 30 – (GC No. 47-002-01).

eBay