Product review (4 stars): Appropriate replacement for the 427-300?
Will this work with the Essick Air 427-300 2-Speed Evaporative Console Humidifier and Air Cleaner which I purchased on Amazon three years ago? I cannot find the replacement filter number on the page for that Humidifier, but it claims it is frequently purchased with this filter. I bought it for my mother, and she is many states away, and I am purchasing the replacement filters for her without access to the unit. Asking her to measure it may not be fruitful...