W191
While many W191 units have been decommissioned over the years, there are still quite a few in service worldwide. Fifteen years ago ARNOLD installed the first Single Layer Insulation System on a W191 with great success.
At ARNOLD, we don't ignore legacy units, we embrace them and keep them running at peak performance with these guarantees:
Highest possible thermal performance
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Maximum reliability
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Maximum durability
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Easiest, quickest, and safest maintenance access possible