Will fit: GLOWWORM ULTRACOM 12 HXI BOILER. GLOWWORM ULTRACOM 15 HXI BOILER. GLOWWORM ULTRACOM 18 HXI BOILER. GLOWWORM ULTRACOM 24 HXI BOILER. GLOWWORM ULTRACOM 30 HXI BOILER. GLOWWORM ULTRACOM 38 HXI BOILER.
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