I NEED A 16 INCH CORK TURNTABLE MAT

....of course, this all assumes that you don’t want to ’slip cue’....a whole different animal ’n genre’.... ;)

Then....you’ll want to....

*L*

You could use a 12" cork mat and go with the 2" record overhang on each side. I've used 10" vinyl as a mat on 12" table with zero support issues.

You could repurpose this 14" cork mat.
CobraCo Cork Doormat | Wayfair

This vendor might do a custom job.
Cork Turntable Mat | Cork Oak | HANDMADE | eBay

@noromance , a whirl’d of possibilities....

Miserable pun...and the Wayfair mat would make VTA a ’perhaps’ challenge....

"I don't think I've ever seen a tonearm play 'uphill' like that....." 😟

Get a 12" cork mat and a handful of 2" cork circles of the same thickness to surround the outer perimeter of the mat.