Keen for us to have a bit of heat in the van I’m installing a propex heater under the driver’s seat. 

I made up a little platform for it to sit on in the metal folder:

Then very tentatively cut a hole in the driver’s cubby space to allow the propex to drop into the void:

I packed out the platform with some sections of 20mm and 40mm box section so that the heater sits level:

And then finally cut the holes into the wheel arch for the inlet and exhaust pipes. I’ll be fitting rubber grommets to stop water getting through: