Hi. I am hearing that the Calor gas is a lot cheaper than Campingaz. We currently have 2 Campingaz 2.75kg bottles in our campervan and I am wondering if anyone knows how much bigger the Calor Gas butane 4.5kg bottles are, i.e. will they fit in our compartment. I have found the size of the Calor bottle -340mm high, 240mm diameter, but can't find the size of the campingaz.