RRNC 2.0 Radon Fan Types

Total Foundation Area

PIPE SIZE Nominal (I.D.)	Less than 1600 sq. feet	1600 to 2500 sq. feet	2500 to 4500 sq. feet
PIPE SIZE Nominal (I.D.)	Less than 149 sq. meters	149 to 232 sq. meters	232 to 418 sq. meters
(3 inch) [7.6 cm]	Use Radon Fan Type: RF1 RF1 Minimum rating:* 50 cfm @ 0.5" WC [85m3/hr @ 125 Pa]	Use Radon Fan Type: RF2 RF2 Minimum rating:* 75 cfm @ 1.0" WC [127m3/hr @ 250 Pa]	Radon fan to be sized by a certified/licensed radon mitigator.
(4 inch) [10 cm]	Use Radon Fan Type: RF1 RF1 Minimum rating:* 50 cfm @ 0.5" WC [85m3/hr @ 125 Pa]	Use Radon Fan Type: RF2 RF2 Minimum rating:* 75 cfm @ 1.0" WC [127m3/hr @ 250 Pa]	Radon fan to be sized by a certified/licensed radon mitigator.

* Radon Fan Types RF1 & RF2 minimum flow and pressure ratings are manufacturer specifications.

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