Question: I can mount this fan on top of my cabinet which has a perforated ceiling? Wiring is feed thru the top. I have 19 inches in depth.
Answer: Thank you for your inquiry. This unit is specifically designed to fit in a cutout in the roof APC's NetShelter WX Enclosures. Depending on the type of rack you have, it may mount on top, but may not provide optimal performance.
Here is a link to the installation manual for your reference. http://www.apcmedia.com/salestools/ASTE-6Z2RRC/ASTE-6Z2RRC_R0_EN.pdf