The Monsoon DCBL is a one-piece vent liner infused with DCBL Suppression System Technology that ensures quiet operation and energy efficiency. Other features include an ADA compliant wireless remote control, five-speed electronic LCD controls, and the ability to duct horizontally or vertically. It fits specifications of other manufacturers, enabling installation in existing spaces. Zephyr. 888.880.8368. www.zephyronline.com.