Rubber grommets

[pabinlove]

Hi all here's a strange one for you. I have lost a round bulkhead grommet. Just above the carpet on the passenger side when I put the cable through for the washer pipe as I couldn't get it through the proper place. Now I have a bloody mouse that visits!! Can anybody tell me what size grommet I need.

[Chrispb]

I know it's  a big one may be easier to get one from a scrappy