Features: 26 pounds activated carbon. Dimensions: 22" high, 15" wide. Effective for up to 2000 square feet. Hepa-Barrier post filter traps particles. Warranty: Limited Warranty 5 years parts 10 years labor. Special carbon blends available for specific chemical problems. Large carbon bed effectively adsorbs airborne chemicals and gases. 3" deep carbon bed ensures proper dwell times for maximum chemical absorption.