Review on Aprilaire 4839 Humidifier Maintenance Kit - Water Panel Model No. 35 Replacement filter for Models 600, 600A, 600M by Ben Walls

Trane THUMD300 is a rebranded Aprilaire 600. I hope this will save someone some time trying to determine if this kit fits the Trane THUMD300. The set was exactly what I needed. Over time the hard vinyl/plastic water hose has developed a pinhole that will likely wear against the notch in the case inlet. My filter screen and frame were also nearing the end of their lives so this kit gave me everything I needed. Works perfectly. Remember to order another one in 4-5 years. I recommend this seller because when I received the original box the frame was broken. I emailed the seller and he immediately sent a replacement.