Decided to give it a try as spares are available. The smell of baking soda was a bit overpowering at first, but soon faded. My previous filter was long overdue for replacement and I could spot the new one right away. I have no issues with the item not fitting, falling apart or causing problems with the heat pump/AC. In my opinion, a reasonable purchase, comparable to the costs that are paid without a prescription in various shops.
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