I'm a new homeowner and not super experienced with DIY projects. I recently got a closet organizer to replace this old wire rack that was in the closet, but I've run into a problem: the instructions say to use 4 M8 lag bolts to secure it to the wall studs. I tried using a stud finder and even drilled some exploratory holes, but I can't seem to locate any studs at all. I've heard that this part of the house might have been a covered porch before it was converted. The closet organizer kit weighs 145 lbs, but I'm unsure about the total weight of the shelving unit that needs to be mounted. Would it be safe to use 4 Toggler 1/4'' Heavy Duty Toggle Bolts to hang it instead? These toggles are rated for 265 lbs, but I'm concerned about the weight distribution and safety.
6 Answers
Another idea is to use some 1x4s mounted horizontally with toggle bolts. You can paint them to match the wall so they blend in. Then, use short lag screws to attach your organizer to those 1x4s. This adds more stability for your shelving unit!
Like some others mentioned, drywall has to be attached to something. If you’re having trouble with the stud finder, maybe try drilling a line of pilot holes until you hit wood. As for using toggle bolts, they can work with your setup—just use 6 instead of 4 for extra support. But I guarantee you there are studs in that wall somewhere!
May I ask how old your house is? Sometimes older homes can have plaster walls instead of drywall. That could make stud finding tricky if that's the case!
Have you checked the ceiling for any studs? Sometimes they might not be present where you expect them in the walls but could be in the ceiling.
You definitely need to find a solid backing for that organizer! Try using a strong magnet to locate screws or nails behind the drywall instead of relying solely on a stud finder. And just to clarify, is the organizer meant to hang entirely or does it rest on the floor?
It's designed to be a hanging unit, but I’m told it must be mounted on wall cleats after securing to the studs.
If possible, I'd recommend swapping those shelves for a floor-standing version. They are typically designed to prevent any tipping without the need for secure wall mounts. If you really want to keep the current shelves, you could consider opening up the wall to add some framing before you hang it. It'll be a lot of work, but at least you won't have to worry about it crashing down!
I feel like I might be in over my head already. I started assembling it while my friend was trying to find the studs. Maybe I should ask my GC how much it would cost to open that wall up.

Good point! I've actually been wondering about that myself.