Hey Loopus,

Just to add to the curiousity of a 17" side. It seems like a weird size, yeah?

Here's where 17" comes from:

Take a 120cm x 60cm panel

-Cut it in half

We are left with two 60cm x 60cm panels

-Cut both in half diagonally

We now have four triangles which are 60cm x 60cm x ~85cm (on the longer triangle side)

-Cut those in half diagonally again

We are finally left with eight triangles that are ~42.5cm x ~42.5cm x 60cm (on the longer triangle side)

Now, if we put two of those last triangles together on the 60cm side, we have a ~42.5cm square - which is a 17" square.

Odd way to do it, yes, but much more effective than 12", and most people don't have the space to do 24" soffits.

I'm sure the 24" / 60cm wide ones will work fantastically. Like I said, most don't have the space for it, but if you do..I bet they will work nice!