Help identifying fuse holder

[nostraduckus]

Hi all, I had an amp installed in my X-Power a year ago and asked for power to be taken directly from the battery with an inline fuse.

Can someone confirm if the fuse holder in these pictures was added by the installer, or is it factory?

 

[Tuareg]

Looks after market to me.

 

[MG Clive]

Agree with @Tuareg, I don't have the same fuse on mine.

 

[nostraduckus]

Thank you all!