Will a couch (99x99x89 cm) fit through an 81 cm door?
Expert analysis
A couch measuring 39 in × 39 in × 35 in does not fit through a door, but it's about 4.5 in too large at the tightest point. The binding dimension is width: that is the axis where the couch runs out of room. We checked every orientation, and none places the couch fully inside. One caveat: applied practical clearance for handling (see tolerance buffer above).