Made in the U.K. exclusively by Lambretta upgrades. Comes in highly polished 304L stainless steel and comes with button allen bolts, flat washers and nyloc nuts. 
This has no mesh, just the grill.
 
Price includes VAT @ 20%
 
 
 
 
 
Outside diameter is just over 3 1/2inches (90mm). Requires 2 1/2 inch (63mm) hole cutting out in panel