On Jun 8, 8:51*am, "Joe J" wrote:
I'm attaching 2 x 4s to the studs in a finished garage. *Finished with 1/2"
drywall. *Are 3" screws long enough, I have a bunch leftover from a
different project? *The 2 x 4s will be holding 5/8 plywood for shelves. *Or,
should I just bite the bullet and go with 3 1/2?

Thanks

It's not the length, it's how you use them :-)