(b)(4).A visual inspection of the prod involved in the complaint was not conducted since the product or a picture of the defect was not provided.However, current production samples of catalog number 1041 mask, medium conc, elong, adult batch 74d1501382 were inspected and no issues were found than can lead to the condition reported by the customer.A dimensional and functional inspection of the prod involved in the complaint could not be conducted since the prod was not returned.A device history record review could not be conducted since the lot number was not provided.No corrective action can be established since the lot number was not provided and a sample is not available to perform an investigation and determine the source of defect reported.Customer complaint cannot be confirmed due to the lack of sample and not lot number provided for investigation.If the sample becomes available this investigation will be updated with the eval results.
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