Product review (3 stars): Not an exact match for the Honeywell Filter T (as suggested)
These came up suggested as a substitute for the discontinued (3 months after I bought it) Honeywell humidifier HEV600 series, filter T, and they aren't quite up to par. First of all, they aren't the same size, so you have to cut them. Second, water does not wick up or evaporate as quickly with these filters, and I feel they bog the functionality of the humidifier down. I would rather pay the extra money for a fully functioning humidifier. I did not find these to be an equal substitute for the real Honeywell filter T, but if you don't mind the decreased humidity output, they do serve some functionality. I will be finishing out my usage of them over the summer, since humidity is pretty high this time of year anyway, but in winter these simply will not do.