Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
Good morning Jennie,
One of these may work? (There’s also a shorter one), you’d have to know the thickness/length required. McAlpine Extra Long Sink Chrome Overflow Grid - 39000064 - https://www.plumbers-mate-sales.co.uk/mcalpine-extra-long-sink-chrome-overflow-grid---39000064-4857-p.asp
Reply to the thread, titled "Kitchen sink overflow" which is posted in UK Plumbers Forums on Plumbers Forums.
We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.