Each fan is 90 cfm. Both together are 180 cfm
Tjernlund Products Xchanger Reversible Ventilator Basement Fans, Model# X2D

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- Dual Reversible Fans (Up to 180?CFM) — Each of the two quiet 90?CFM fans can independently operate in supply, exhaust, or opposing directions, providing flexible options for fresh?air intake, stale?air exhaust, or balanced ventilation to effectively refresh basement or crawl space environments.
- Automatic Humidity Control — Built?in adjustable dehumidistat lets you set relative humidity (20–80%) so the system runs only when needed, helping control humidity and prevent mold growth while minimizing energy usage.
- Magnetic Draft Stops — Integrated magnetic dampers seal when the fans are off, preventing unwanted infiltration of cold or polluted outdoor air when the system is not operating.
- Plug?In Power & Low Energy Use — Standard 120?V plug?in unit uses only about 40?W (0.6?A), consuming far less energy than a typical dehumidifier while offering continuous or automatic ventilation.
- Easy Retrofit Installation — Mounts through a 12¼? × 5¼? rim?joist or wall opening; includes outdoor screened hood and wall?mount control module with individual fan switches—making DIY installation straightforward.
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