Tripp Lite's SmartRa SR1UBRUSH is a 1U cable pass-thru panel with brush strip. The brush strip blos unwanted airflow inside ra enclosures and server cabinets. The SR1UBRUSH imps cooling efficiency and segregates cold aisle from hot aisle. 1U Cable pass-through panel with brush strip Brush strip blos unwanted airflow Imps cooling efficiency Segregates cold aisle from hot aisle.