We ordered Model "S300", but received "R300" instead.  Why is this different?

posted in: Products Transformers

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This is an Indoor/Damp location transformer.  Many of these models are rated to be "R"ecessed into an Insulated wall with Insulation in Direct contact with the sides of the enclosure.  

The 300 Watt transformer is one of the models that can be "R"ecess or "S"urface mounted.

All "R"ecessed units can be "S"urface mounted, so that Model is built and labeled as R300, therefore can be "R"ecess or "S"urface mounted.