Technical "B" side cover

Here’s a couple I have

 

Enhanced-

 

I believe this is B, and yes, it's for sale. after looking at others, maybe it is not for B. anyone know?

 

Burns intake re pops are available in both single and double downdraft configurations (that’s an answer to a question asked awhile back in this thread)

 

I would be interested to know what B covers are available to buy now (and where to buy them). I’m in the process of building my B now so it’s a good time. It could be years before I find one at a swap meet.

 

There is a guy here in the UK that will make you one ,cast in alloy.