A " Why's it" box

[Lostmind]

Weird box from the Flea today.
I can't figure out why it has such a heavy duty spring loaded lid. The Hinge is three times what's needed.
I found a ProtectoSeal Comp. , but no info on 284A box
6" x 6 " on lid x 3 1/2" high
Looks like it was made to slide out of a cabinet? has the small handle on front.
It's heavy.
Any clues?

Sorry , lost a photo of the overview. I'll get one later.
Photos added

[skipskip]

Fire?

Security?

[cody6268]

Looks like the boxes often found on the running boards of old fire trucks to me. Often, those of that size held a first aid kit.

[Lostmind]

Here's another odd one.
https://www.etsy.com/listing/266532786/metal-parts-cleaner-protectoseal-co?ref=market

They make fire protection pieces. Still would like to know the purpose of this one.

cody6268 , thanks for the input

[lptools]

Hello, Lostmind. I believe that style is still made by Just-Rite. You would pour whatever solvent you are using into the can, right through the screen, but not higher than the screen.. Then you would press down with a rag, to dispense just enough liquid to dampen or soak the rag. Close the lid, and safe storage for the solvent. Regards, Lou