FITS 9” x 3” VENT OPENINGS – Compatible with standard HVAC duct sizes that are no bigger than 9.27" x 3.15" for wall or ceiling installation; works for exhaust or intake airflow. DURABLE ANTHRACITE METAL – Premium steel construction with protective coating for long-lasting strength corrosion resistance and clean appearance. BUILT-IN MESH SCREEN – Filters out dust dirt and particles to keep air pathways clear while maintaining efficient ventilation performance. EASY DIY INSTALLATION – Simple screw-on design for quick setup using standard tools; fits securely for stable wall or ceiling mounting. (SCREWS NOT INCLUDED) VERSATILE VENT USE – Ideal for home garage office bathroom shed or kitchen HVAC systems; suitable for indoor and outdoor applications. VENT SYSTEMS is a company with a long tradition and experience. We provide innovative solutions in the field of ventilation of premises. We are constantly striving to develop and deliver even better, more advanced and more efficient technologies that would enable our customers to enjoy healthy fresh air indoors. All products undergo thorough quality control before going on sale. We also guarantee professional service and periodic maintenance system for maintaining system reliability for many years. We have created the value of the VENT SYSTEMS brand by putting particular emphasis on: QUALITY OF THE PRODUCT - WIDE RANGE OF PRODUCTS - MEETING THE CUSTOMER'S NEEDS. The company has implemented and maintains quality management system according to standards. Such system allows orientation of the production towards the customer needs, i.e. supplying quality and reliable products, building efficient client relationships and receiving feedback from them in order to improve the quality of goods sold. The main goal of the quality management system is to ensure the continuous customer satisfaction.