The Portal Window Fan from Vornado features a low-profile rectangular design measuring just over six inches tall for a discreet fit. Engineered for powerful airflow, it draws fresh air inward or reverses electronically to exhaust stale air outside. Three speed settings and intuitive controls support straightforward operation, while minimal noise maintains a comfortable environment. A weather-resistant case and modular Soft-Fit blocks allow installation in windows from 24 to 38 inches wide.