Amp Fuse

Where can I find a sheet of 40 fuse?

I blew the 40 amp fuse in the sub and went to Wal-Mart and Hardware local and did not. Where can I find them? also online. I would try the auto parts store, but none has been opened yet.

Napa, Autozone, almost all auto parts stores, and shops that install stereo.

50 Amp Fuse at Canton Heritage Park