Firstly, I'm very happy with the unit! I purchased this to make a small in ear monitoring rig that can sit on my guitar cab.
It's perfect for what I want to use it for. I've been able to fit in an Art PB4X4 Power Conditioner, Midas MR18 (Recessed with Bracket Warehouse Rack Ears), a Sennheiser EW300 IEM and Shure GLXD24, all plugged in and ready to go.
There was also space to mount a Behringer BA 19A boundary mic, for hearing room/crowd, and a TP Link AC750 5G Travel Router to the front of the Midas rack ears and still be able to close the front lid.
I also stuck a 4 way gang power strip to the back of the Midas, for plugging extra things in on the fly, and have some usb power leads running to the front, to power the Router, and power some Joyo 5.8GHz wireless mic adaptors, for quick setup when plugging the singer's mic and bass amp into the Midas.
I can slot my mic down hte side, along with my in ear pack, USB cables and spare plugs in a Shure mic pouch.
With all this stuff in above, the unit is then maxed out for space and comes in at a total of 15.5 kg, which is easy enough to carry, based on where the handle is. The latches and handle seem strong enough to handle the weight, without stress.
The fastening bolts and screws are fairly easy to slide in place for mounting devices. I prefer this design to the likes of the Pulse ABS rack units, where the holes don't always line up correctly.
It also sits well on top of my Marshall SV212