The Condar ASV-90 provides the ventilation you need without the drafts, energy loss and security concerns of an open window. Open windows can give you a blast of arctic air–along with dust, noise, and security concerns. The ASV-90 delivers diffused, filtered, fresh air quietly and efficiently. The ASV is small and attractive and can be easily painted to match both interior and exterior surfaces. The ventilator needs no electricity, and is ruggedly built for many years of service. Installation is quick and simple, with all the hardware and caulk supplied right in the box.