Product review (5 stars): Perfect Fit
I purchased this to replace a dirty filter in my Lasko 1128 humidifier.  It is a direct replacement of the filter that came with the device and fit perfectly.  It humidifies just as well as the OEM  filter.  This also has antibacterial properties built in and so far so good.  Amazon has it for the best price of any place I've seen (Prime for the win!)  I've seen these as expensive as $24.99 at a local Lowes so definitely get it on Amazon with your prime membership.