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311 Bionaire Electret Air Cleaner Replacement Filter

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Bionaire Electret main replacement air filter

• Fits Bionaire model BT3000.
• Measures approximately 21 1/2" x 28 1/2" x 1/8" Thick.
• Removes dust, smoke particles, pollen, and bacteria.
• For optimum performance, replace filter every 3 months.

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