What size flyer are you thinking of?
Looking up "Standard Flyer" sizes for Australia, I find 4 listed as "Standard"

105x148mm, 99x210mm, 148x210mm, and 210x297mm

Hi Love Ink

We are thinking standard size A4 (210mm x 297mm).

Cheers, Gen

Hi, are you looking for single side design or two sided?
Thank you < Mats

I have two submissions but they are for the same design (one and two sided design) but I couldn't get them to go in together.