For anyone eyeing a Bijli and not too hi-end or hot components, this is a much better deal than a Bijli quality-wise imho.
The SLK1650/2650 cases that this thing is based upon, with a newer bezel i.e., had very thick sheet metal, were quite heavy and much better build quality than the CM Elite series that sell for 2-2.2K odd.
This NSK will be atleast as ok as a CM elite if not better.
The HDD area has vents at the front iirc unlike solid metal in other cases.
The lower side panel vents should be blocked.
The funnel on the side maybe used for fresh air to cpu cooler.
Else it's preferably blocked if not using the funnel.
So if one blocks the lower 80mm vent at the front and on the side panel if any, all the air that the psu and the Rear 120mm fan have to push out have to come in from the vents near the HDDs and will be almost as good as having a dedicated fan for colling HDDs.
I had tried this with my Super Lan Boy and with a 70cfm rear fan, psu with slow 120mm fan and side panels closed, i had same HDD temps without a front fan as i had with a 65-70cfm odd front fan.
Due to the design of that case, the air had no option but to enter from HDD area and the negative pressure was enough to maintain a steady intake of air to keep HDD temps in check.
The only thing was SB and NB/cpu temps went up by a couple of degrees as they were deprived from the cooler air being force-fed to them but with a good cooler on them they were anyways much lower than usual.