BESTÅ storage combination with doors, white/Selsviken/Stubbarp high-gloss/white, 707/8x161/2x291/8" - IKEA
Per Besta instructions, it says to connect another unit by screwing them into holes 3 and 7. Any idea why these? Can I use other holes? Doesn't seem uniform like this. :
IKEA BESTÅ TV bench with white Lappviken door and drawers Assembly instructions. - YouTube
IKEA BESTA ADAL AA-316674-7 user manual : Free Download, Borrow, and Streaming : Internet Archive