Where are some typical places one might purchase an inexpensive OSHA type warning sign that says "Danger - High Voltage". I don't need an expensive metal or vinyl one. Just a thin cardboard one about 9"x12" for indoor use. I went to Lowe's and Home Depot and they do have signs like "For Sale", "No Hunting", "Keep Out", but none of the OSHA signs. But those were the kind of material I need--cardboard or thick paper. I need to try to pick one up in a retail store rather than waiting to order one off of the Internet. Any suggestions? Would an electrical supply company likely have them? Thanks.
GS