DEVILBISS PROV-27-K4 Belt Filter. Suitable for use with the Devilbiss PROV-600 or PROV-650 Air Fed Mask. We are under no obligation to provide the product to you at the incorrect (lower) price, even after we have sent you a dispatch confirmation, if the pricing error is obvious and unmistakeable and could have reasonably been recognised by you as a mispricing.
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