Customer Reviews for Arietta Universal No Return Valve for 6 in. Round Ducting

I ordered this product from Home Depot based on information I received from Arietta Customer Service. I arrived but was too large for my unit. I had to cut it down with tin snips to make it fit. My field modifications worked okay, but it took me about an hour to slowly trim this into shape. The product works, but you will want to triple check the measurements.