The Fantech Rn3 is an excellent choice for elevated radon levels, poor communication, multiple suction points, and/or large sub slabs.
The Rn3 replaces Fantech model HP220.
Note: Utility cords need to be purchased separately. The Rn3 has 6" openings thus requiring 4"x6" rubber couplings for mounting. 4" pipe is required for the Rn3. Varmint guard are a must to protect your fans warranty.