Fridge Insulation

My thought was to shove it in the gap on each side leaving the gap at the back as is. This is the area the air passes through. I didn't think you needed to have a gap on the sides. Am I wrong?
I haven't looked at the top or bottom yet. I thought insulation was meant to prevent losing cold and/or gaining heat. I know you need to keep air intakes etc clear but thought the more insulation you had everywhere else the better. Does this make sense?

Thanks Allan. I'll pop it in loosely.

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Foil board may be a good product but they claim on their website....
"Foil board... is fully endorsed by Standards Australia."
They may well 'comply' with the appropriate Australian standard(s) but.........

Standards Australia state that .....
"We do not enforce, regulate or certify compliance with these standards."
Are all the other statements on their website correct?

Thanks Snoopy1. Just to clarify. You state the manufacturer recommends leaving a gap the same thickness as the board. Is it the gap that almost doubles the R rating?

Hi terryt. My understanding is that the air gap between the outside wall where the heat is coming from (in my case) and the shiny side of the foliboard does increase the R rating as opposed to attaching the foilboard directly to the outside wall. I got the figures in an email which I no longer have. This is a link to their FAQ page http://www.foilboard.com.au/FAQs
I have no affiliation with Foilboard pother than having used their product.

Hi Allen B. All I can say is I am glad I am not as cynical as you seem to be otherwise I would never log on to Explore Oz.

Yes, your'e right Snoopy, sorry about that, I am getting cynical in my old age. I guess it comes from being dismayed by so many trying to con me in one way or another.

I do agree with you that the foil needs to be able to reflect back into an air space for best performance.