Product review (5 stars): Fit my Carrier unit - buy this only if you need a new metal holding bracket.
Can't find replacement filters for my Carrier unit in local hardware stores and came online to find this.

Unit fit well and was easy to install.  Seems to be of good quality.

My metal frame had broken so I had to buy this item - if your existing metal bracket is in place and in good shape, just buy the much cheaper pad.