The Aprilaire 4236 is the correct replacement for the following humidifiers:
The Aprilaire 4236 is a humidifier float chamber filter that works with your select Aprilaire humidifier. The 4236 is a U-shaped component that encases the water panel inside your humidifier. This will direct any mineral deposit build up back into your water panel and out of your humidified air.
The Aprilaire 4236 Specifications:
The Aprilaire 4236 humidifier float chamber will keep your humidifier working at its best. By ensuring that mineral deposits stay in your water panel and out of the air you breathe, the Aprilaire 4236 increases the productivity of your humidifier.