When we purchased our Air Purifiers the velcro to stick the prefilter on the filter was all the way around, 100% sealing it to the filter. The replacement ones has 6 TINY little pieces of velcro so it's doesn't stick that great and I feel like dirt and stuff is going to go between the filter and prefilter. The prefilter is usually what catches dog hairs and the bigger air pieces which are now going to go right in the main filter and clog it up... I'm so disappointed in the replacement filters and hoping they will switch it back to what it was before. I installed them last night so we will see how they perform. I don't have high hopes though. Especially for the price I paid for these filters!
These HEPA filters work very well. However, as an essential part of the success for the air purifier Sears needs to make them more readily available and at a reasonable price = $39.99 I must help my neighbors every time they need to order these because they are rarely or never available! Today, it was $87.62 and very hard to find!
A perfect fit for the medium room air purifier, but a little hard to find since the picture on the box looks nothing like my unit. Does a great job and keeps the air fresh.