Product review (5 stars): Functions exactly like the OEM pads form Carrier
I've been using these for a few weeks now. They are equivalent to what carrier installed in my new furnaces. I measure humidity runtimes and the cycle time is the same as the new Carrier pads that came with the unit.

Fits this carrier humidifier http://www.carrier.com/homecomfort/en/us/products/indoor-air-quality/humidifiers/product---humidifiers---humccsbp/

Here's a tip to get more out of it: If you have hard water and they stop being effective from calcium buildup, soak them in a pan of hot water and a cup of white vinegar for 30 minutes. dump the vinegar, rinse in the direction of operation flow until the calcium all falls out. You can get 2 - 3 uses out of each pad. Don't be tempted to add baking soda to this mix, it takes the coating off the pad.