πππ‘ππ π΄ππ π»ππππππ πΉπππ€, Can be calculated directly or read from table 10, π΅πΊπΆπ· π»ππΊπΆπ· β π΅πΊπΆπ· π»ππΊπΆπ· β Retrotec Residential Pressure & Air Leakage User Manual
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