This 20-inch box fan supports whole-room air circulation with max 1800 CFM large airflow, equipped with 3 adjustable speed gears to match different cooling demands. Adopts energy-saving structure to maintain strong air output with low power consumption, matched weather-resistant motor adapts multi-scene placement as window fan, floor fan or workshop exhaust fan. Pre-assembled design can be used right after unpacking, slim body with rounded corner steel frame is sturdy and easy to move. It can cooperate with air conditioner to accelerate cool air circulation, comes with fused safety plug and ETL certification to guarantee safe long-term indoor use.

· Dimensions: 21.75in H × 4.25in W × 20.5in D · Weight: 7.25 pounds · Fan blade diameter: 20 inches · Wind speed gears: 3 adjustable speed levels · Max airflow: 1800 CFM · Applicable area: 100-300 square feet indoor space · Power cord length: 6 feet · Main material: Plastic fan blade + steel frame · Motor feature: Weather-resistant durable motor · Assembly state: Fully pre-assembled, no extra assembly work needed · Usage scenario: Indoor use only · Safety certification: ETL Listed certified, fused safety plug protection · Placement mode: Support window placement, floor placement, exhaust use · Package Quantity: 1 box fan per package