DerbyBorn a écrit :
A lot of heat can escape sideways with a gas hob. I would go for a metal
splashback. The covered MDF won't last long.

It depepends upon how they vent. We have a double oven, one small with
a larger one below it. Its sides and rear are very well insulated, it
uses a fan to draw air in at the rear, which is vents out the front
between the two doors. It runs very cool around the outside casing.