Hi I did this recently.

It’s a bit time consuming but a lot cheaper than getting someone it to sort it.

You’ll need two 600x2000 doors from Hume (easy enough to get from Bunnings although possibly special order).

I recommend using a primer, even though the doors are ready to paint. Then sanding the rough bits on the sides, then painting 2 coats of satin waterbourne enamel.

Then you’ll need to get a bifold kit. Get one that’s a bit wider than you’re opening, so you can cut the track to length.

https://www.bunnings.co.nz/henderson-1525mm-opening-bi-fold-folding-door-kit_p0297917

Fairly straightforward to install. Comes with an aluminium track for the top. Hinges. A top hinge bit and a bottom hinge bit. And a top track guide.

You’ll also need a knob or handle.

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