Airflow up to 104 cfm @ 0.4" PS serves 3 to 4 bedroom homes Top-mounted ports for easier duct connectivity Unobstructed front access The TurboTouch feature delivers up to 50% more exhaust capacity Aluminum core provides superior heat transfer capability Integrated airflow measurement system allows for rapid and accurate reading of airflow during installationWebsite Brochures_Info\428472 Flex 100H ES Spec Sheet EN .pdf