What size brick?

[arnold9801]

Can you advise me please on what size fire brick most use in constructing a domed oven? 

Thanks

Arnold9801

[oblertone]

Firebricks come in all shapes and sizes however you should be looking for something approximating a standard house brick I.e. about 8x4x3" or 215 x 102.5 x 65mm. When split in half and laid 'made' face inwards you'll have a dome approximately 4" (100mm) thick.