Description
Made of AL29-4c stainless steel for superior corrosion resistance and structure strength, this 3″ to 4″ Increaser is used to install Modine Hot Dawg heaters where sidewall venting is allowed by local code.
The increaser features factory adhered gaskets for an airtight fit between joints with a ring tab locking mechanism to keep the fittings together. This part is designed for residential installation of models HD30 – HD75. UL listed.
An increaser is not needed for Modine Hot Dawg models HD100 – HD125.
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