Size 477 x 375 x 30 (all mm). This is a new pattern part, alias a no-brand compatible, suitable for many current models of Bosch, Siemens and Neff ovens. New, has slight blemish on the chrome plating at one back corner. Not quite as good a fit as the genuine B/S/H oven/grill shelf. Bought as an extra shelf but I was given a full refund for the missed bit of plating, and the shop doesn't want it back. Check online whether part number 00577170 fits your oven!

This is a re-post after some email issues just after I listed this shelf, last year. I'll try to keep checking through the Freegle app in case messages are still not reaching me.

Oven shelf Bosch-Siemens-Neff 00577170 (Fulbourn CB21)