Here’s the first thing you need to know: when a door is labeled as a six-foot slider, that is the nominal size—the name of the door, not the actual hole it makes. The real magic number is the rough opening, which is the framed hole in your wall before the door unit goes in. For most standard sliding glass doors, that rough opening width is about 73.5 inches for a six-foot door.
But wait—the actual clear opening you walk through? That's even narrower. After you subtract the frame, the stationary panel, and the tracks, that six-foot slider gives you a walking space of only about 71.5 inches. Yes, you lose nearly two inches to the frame. Irony is a cruel architect.
So if you see a "6 ft. slider," mentally shrink it. Your sofa needs to fit through that 71.5-inch gap, or you’ll be learning a new vocabulary like Jen did.
