Most 3d filament is not safe as an outlet or switch cover. Just like with any switch or outlet cover you print, use at your own risk and choose a filament that can safely do the job and according to chat, even if you use the right filament for the job it will not be code compliant because its not officially UL certified.
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I made the outlet holes smaller than the original so they'd snuggly fit my outlets. I'll post a version that has bigger holes like the original version has if you message/comment that the holes are too small for your outlets.
For the Switch version, I posted 2 versions of the 2 switch, one is wider than the other, I don't have those switches in my home so I don't know which will fit yours, please leave a comment if you try it out.
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Remix of @PapaPooch Coffin outlet cover, I printed face down at 100% infill
Switch Version from @Laserlady58 s remix- If you want a traditional sized coffin switch check theirs out. I used their stl as a template for my switch version because I don't have those switches in my house.
I used @EthanA_224001 s GFI as a template for my coffin outlet, again if you want a normal switch sized GFI outlet check out theirs! Fits like a glove
The author remixed this model.
remade based on the original STL. The coffin is larger/taller and looks more like a traditional coffin. Additionally I adjusted the holes to fit tighter around my outlets and added a support bar for the screws.