Should work fairly well, I would think you will need to add some additional air flow though.

I am about half way done building a similar enclosure, Ill take some pictures when I am done. The only main difference is that the miners are ported directly outside though a 4" insulated pipe, and the top of the box is closed with a 290 CFM exhaust venting directly outside to keep some air flowing. Its going to be 3'x2'x7' for 2.6 kw of miners.

I am building the walls out of 3/4" wood - 2" Rock Wool Insulation - 3/4" wood - 50 Mill Sound Dampening Material. I am using silicone to fasten everything together so that the sound doesn't travel through.

wow the forum has gotten quite hostile, it was just a suggestion

I take it you did not read the specifications of the 240V PDU digital logger is offering which includes Surge Protection 580J 25,000A MOV. How is that not exactly what he needs. Yes it is a smaller company, with meh documentation. You could find a similar thing from one of the bigger server like Tripp-Lite or APC with less features.

Not sure why no one gave you a good answer.

These digital logger PDUs seem to fit what you need - https://www.digital-loggers.com/220.html .

For my ASICs, I ended up finding a good deal on new Eaton UPS's on ebay. 400$ for Eaton 9130s, 1800W.