Product review (1 stars): Quickly Turns Into a Shapeless Ineffective Blob
I bought one of these filters hoping it would be a less expensive duplicate of the Honeywell original filters. It was a huge disappointment! Some reviewers have referred to a metal cage that would help it retain its shape. Mine had no such shape retainer. In fact, after only a few days use, the filter lost its shape and collapsed into itself. Humidifying efficiency failed, as would be expected. The filter now bears no resemblance to a circular cylinder. It looks like an amorphous blob of mashed potatoes. The authentic Honeywell filters are worth the additional cost because they retain their shape longer.