Cut outs for fitting can be found in the manuals.

Manuals Manuals are usually for multiple models:	Exploded view With part numbers (descriptions of parts are in French)
1833 - 3 Burner range with grill 1823 - 2 Burner range no grill 1813 - 2 Burner range with grill 1423 - 2 Burner range no grill 0614 - Atoll Single burner gimballed cooker 0623 - Duo Two burner gimballed cooker 4310 - Single burner built-in hob 4323 - Two burner built-in hob 4333 - Three burner built-in hob 87437 - Perigord wall oven	1833-Exploded View.pdf 1823-Exploded View.pdf 1813-Exploded View.pdf 1423-Exploded View.pdf 0614 Atoll-Exploded View.pdf 0623 Duo-Exploded View.pdf 4310 Single burner Hob-Exploded View.pdf 4323 Two burner Hob-Exploded View.pdf 4333 Three Burner Hob-Exploded View.pdf 87437-Exploded View.pdf

Other dimensions that we have available.

DUO-Dimensions.pdf

4310-Fitting dimensions.pdf

4323-Fitting dimensions.pdf

4333-Fitting dimensions.pdf

1423,1813,1823,1833 Fitting dimensions.pdf  The physical dimensions are the same for all these models

87437 Dimensions.PDF

Tips and guides that may assist you
Some of these are crude, but still may assist you in resolving issues that you may be having.
Some of the information found in the FORCE10 and GN ESPACE Knowledge area is releveant to ENO and worth looking at.

Flame failure and not staying lit.pdf

Oven temp no good.pdf

spark box replacement.pdf