Sweepl on bottom front storm door

I need a replacement sweep for bottom of my front storm door. Unable to find in any hardware store. As you can see has 2 lips or sweeps. Piece would slide into a track on the bottom and looks to be about 1" tall. Please help.

Additionally the person at Home Depot found a similar sweep but it had 3 lips instead of 2. I don know if that would work. That part # was 40-207.