Replacement Grill on Thiele Cabinet.

[CaptGuitar]

Does anyone know what this black trim molding is called and where I might be able to purchase to replace grill on my Thiele Cabinet?
Thanks

 

[solderhead]

Is that the standard "piping" like you'd see trimming the tolex on a Marshall head or cab? You can find that at any store that carries speaker cabinet finishing supplies. This item at Mojotone looks like the same product that's in your picture.

Medium black piping 7/16" x 1/8" bead with lip
https://www.mojotone.com/cabinets/cabinet-parts-hardware/piping?page=1