Quest Manufacturing Ventillation Unit, (4) 4 inch 80 CFM Boxer Fans, 19 inch x 16 inch, 1U, Black F19-6004

This Ventilation Unit is constructed of four 4 boxer fans and is ideal for adding additional ventilation to any standard wall or floor enclosure. It is easy to install in a single 1U slot and may be positioned anywhere within a cabinet requiring extra cooling or air flow.”