Rock-ola model 425 "grand prix" fuse question

I have a blown fuse on the power distribution assembly, the manuel says it is part number ST-4321. On the fuse itself the numbers that i can read are: 3JSS MDL 1 1/10 125 volt. Here is my question, are these hard to find fuses or can i just go to radio shack and pick one up. I would hate to put in the wrong fuse and burn down my house. any help would be great.

MDL 1-1/10 is a 1.1 amp slow blow fuse.