CADR Rating
CADR measures cubic feet per minute of clean air delivered by a purifier.
- Performance metric
- Room sizing
- Efficiency measure
- Standard comparison
- Objective rating
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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.