2" (5cms)This is available in five versions, one of them in fact only 1" wide, for those really tiny spaces, where you can just fit in a two ring hob, and maybe a microwave.

There is also one version in white, another with the effect of halogen hobs lit up. 

Please indicate your choice below.A, B, C (white), D (lit up), E (2 ring)

Type  A B C (white) D (lit up) E (2 ring)