LASKO 3720 20 Weather-Shield Performance Box Fan Type: Box Fan Fan Blade Size: 20 Speed Setting: 3 speeds Weight: 10.04 Feature: Isolated Weather Shield Motor for Worry-Free Window Use High-Performance Grille for Ultimate Airflow Wider Body for Greater Floor Stability Three Whisper-Quiet Speeds Energy-Efficient Operation U.L. Listed Labor: 3 years limited Parts: 3 years limited