Are the effective width measurements of Ikea IVAR usable?

Hello,

a small special question: Ivar shelves come in a width of 42cm. Some width is lost due to the posts on the left and right. Can someone tell me exactly how much width is usable?
I haven’t found this information on the internet, and the nearest Ikea to measure it is quite far away. And it really depends on centimeters right now.
Thanks!

Jonas

Hello,

I can measure again tonight – according to:

IVAR
Side panel, pine

I would say that around 2*2 cm should be deducted from the width of the base (post thickness 4 cm, each post can be fitted with shelves on both sides).
Regards,
IKEA friend

Thank you! Yes, that makes sense with 2 * 2cm. I would still appreciate the exact measurements.

Hello,

I have measured - the inner dimension between the two side panels is 39.5 cm. However, these are the old Ivar versions with metal rails instead of the gray plastic rail used today. The "42" bottom is actually 42.5 cm wide.
If you need the specifications for a "new" Ivar, someone with one of those would have to measure whether there are any differences.
Regards,
IKEA friend

Great, thank you for the precise measurements. That helps me for now. Many, many thanks!