Product review (5 stars): As advertised!
I found these at Amazon at about 60% the cost at a local big box outlet. However I was somewhat concerned after reading reviews saying these were not as advertised. Decided to give it a try as we need these filter replacements regularly. They were delivered exactly as described including the change indicator, the same product I found locally, and on the manufactures web site. They fit perfectly and work very well. I would highly recommend this product as a reasonable alternative to a fully ducted ventilation hood.