Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5024885.

This box fits both a 280 nm LED corn bulb UV light and a 305 nm lamp. It can be used to contain harmful UV light when performing sterilisation or curing of resin prints.

I recommend printing in PETG, the flexibility allows for the corn bulb to fit in place.

You can use aluminium foil to surface the inside of the box to make it more reflective.

DISCLAIMER: Never expose your eyes to any wavelength of UV light.