The duct can be squeeze properly, but will reduce the aesthetic. The duct will turn to flat when the fabric duct squeezing, but the sectional area will be the same, so the squeezing the ducts will not have too much impact to the airflow if the squeeze height less than 50%.

If the squeeze height larger than 50%, the internal airflow will be influenced, with a high airflow velocity, the fabric duct may shaking, so we recommend to set a upturning or down turning unit to avoid the squeeze.