The Slant/Fin Liberty is a discontinued oil-fired cast iron boiler with an efficiency rating of up to 86% AFUE. The Liberty was available as either a hot water or steam boiler. It was equipped with a Beckett oil burner and featured a dual-size viewing port and convenient metal push nipples. These push nipples were located to the side of the heating sections, allowing a more uniform heat transfer while minimizing draft loss. All controls came wired and fully mounted, and steam models included float type or electronic low water cut-off.
Slant/Fin also produced a Liberty II boiler. The Liberty II is also discontinued and was the exact same boiler as the Liberty except for the front door panel, which had different hinges.
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