Diy0610 Rear Iec Big
I haven’t used these folks but their selection is really impressive. Might be worth checking out if you need to make or build an enclosure for a project… –

Over 600 unique combinations of options are possible when you choose the DIY-1712 chassis, our most universal chassis. These options include: three base styles, 6 front panels, 8 different knobs, ventilated or blank top panels, and blank, or IEC-cutout rear panels. Our chassis are designed to accommodate both solid state and tube-based equipment, by providing you with the option of a .050″ (1.3mm) ventilated top panel, or a blank .080″ (2mm) top panel.

DIY Enclosures – Link.