Best Window Box Fan

Amazon Basics 20-Inch Box fan, 3 Speeds, 5 Blades, Lightweight Design, Black, 67 Watts, 6.8"D x 20.86"W x 21.33"H

Comfort Zone Twin Window Fan with Quiet Setting, Reversible Airflow Control, 9 inch, 3-Speeds, Expandable, Exhaust, Dual Fan, Airflow 9.84 ft/sec, Ideal for Home, Kitchen, Bedroom & Office, CZ319WT2

Amazon Basics Window Fan with Twin Heads for Cooling Airflow, Exhaust and Intake Switch, 9-Inch Blades (6 Blades per Head), 2 Speeds, Expandable Side Panel, Manual Control, 73W, White

Hurricane

Hurricane Classic 20" Floor Box Fan – Compact and Portable, Powerful and Quiet 3-Speed Cooling for Home, Greenhouse, Office, Gym, Garage, and Workshop

Genesis 20" Box Fan, 3 Settings, Max Cooling Technology, Carry Handle, White (G20BOX-WHT)

shinic Twin Window Fan with Remote, 9-Inch Blades Reversible Airflow, Thermostat Control, 3 Speeds, 3 Functions, 23.8"-37" Expandable Width, Window Exchaust Fans for Home Bedroom, ETL Certified

BEYOND BREEZE 9" Twin Window Fan, 2-Speed Expandable Dual Window Fan with Reversible Airflow Blades, Manual Controls

Genesis Twin Fan High Velocity Reversible AirFlow Fan, LED Indicator Lights Adjustable Thermostat & Max Cool Technology, ETL Certified, White (A1WINDOWFAN)

Bionaire 8.5" Twin Window Fan with Reversible Airflow, 3 Speeds, Remote Control

HOLMES 9" Twin Digital Window Fan, Reversible Airflow Blades, In/Out Exchange, 3 Speeds, Built-In Extender Panels, Ideal for Home, Bedroom or Office, Remote Control, White