IKEA is based on a metric system. Translating it into inches sometimes comes up with some different measurements than people who use feet and inches are used to.

Put a filler in if you need the upper and lower measurements to match exactly.

I think what I’m curious about is why would they have an odd dimension on the corner base cabinet that doesn’t match with the wall cabinets above. Even in a metric system this feels weird to be a slightly shorter width than the rest of the system.

The corner unit is designed to be adjustable and has a built in filler (blind panel). As I recall the door on the base corner is 18” (I may be wrong, it’s been awhile since I’ve used this unit)

Regardless when you are designing you need to allow for a filler on your uppers where they meet the wall or they won’t open fully.

I plan to use this cabinet too, wiscokid, so thank you for this info. I'm trying to visualize the door and where the filler is. Is it at the end of the cabinet?

It’s in plane with the door. Picture a cabinet with one 21” door and one 26” ‘door’. The 26” door is fixed in place and the perpendicular cabinet run gets installed up to it. At least 3” of the 26” door is visible and is the “filler”, you can slide the cabinet out from the corner so more of the ‘filler’ is exposed.

thanks!

Thanks for all the info.

So to line up the corner base cabinet with the 48" wall cabinets, I'd have to slide the base out a little from the wall so the right edges align right?

Correct

Thanks! That was very helpful.