CFM Airflow
CFM indicates how much air moves through your purifier per minute.
- Airflow measurement
- Fan selection
- Performance indicator
- Room coverage
- Energy efficiency
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CR Box UK: Build in 30 mins for under £199 (VAT included). Free UK shipping (2-3 days). True H13 HEPA 2.4x more efficient than Dyson MERV filters. Energy Star 2025 certified. Trusted by NHS, schools & offices.