Product review (4 stars): Good product!
This is a great product to have in your home if you think the air is dry.  We thought our house was a little drier than usual this year, so we bought some WEB Humidifier Registers.  We came to a quick realization that it is extremely dry in our house (or had been) by seeing how quickly the water evaporated from the humidifier registers!  We have had to refill them at least 2-4 times daily over the last month or so.  So, while they are great and they do help humidify the air in our home, it's a chore to constantly (it seems) walk around with a water bottle and refill all the time.  With that said, I'm glad we have them and I only wish they were easier to get locally.

**Note: The prices for the exact same product vary by significant amounts, so shop around the different websites (or just order directly from WEB) to get the best price.