510-H Bionaire Electret Humidifier Aftermarket Replacement Filter
Aftermarket Replacement by Accumulair
Bionaire Electret main replacement air filter (cut in half to fit)
- Fits Bionaire model BT204.
- Measures approximately 4 1/4" x 22 1/4".
- Removes dust, smoke particles, pollen, and bacteria.
- For optimum performance, replace filter every 3 months.