It's a piece of paper and it fit nicely in the slot.just make sure you match your model# to this product and it is exactly the same that you replace trust me
Buy Small Wick for Skuttle 2000 and 2100 Series humidifiers Now
Buy Small Wick for Skuttle 2000 and 2100 Series humidifiers Now
Buy Hamilton Beach 05910 TrueAir Cool Mist Humidifier Replacement Filter for 05518 Now
Just a warning to those of you who are like me and aren't the most meticulous keepers of humidifiers: the large filter grows mold very easily. A previous reviewer noted that you should keep the filter wet, but in my experience that just grows mold. I've had to toss 2 filters for that reason. At this point, I've switched to Ultrasonic humidifiers because I'm afraid to use the previously moldy cool mist one (esp with the dusty fan).We purchased a Hamilton Beach cool mist humidifier for our daughter. We go through one filter/month. The filters are not sold in any locals stores and we can only buy them on Amazon. We usually have to purchase (6) at a time because the filters smell moldy after 3-4 weeks. Now the price has jumped from $6.99/filter to $15/filter. We are disappointed with the product and it's permformance.Want Hamilton Beach 05910 TrueAir Cool Mist Humidifier Replacement Filter for 05518 Discount?
The filters last us all winter. The trick for us is to keep it wet...do not let the tray go dry. Vacuum the vents once a week. Our son bought a non-filtered humidifier that left white residue (lime, calcium) on his floor near the unit. This model is worth the [money] per year for that reason.