UL listing and Quality Control for Channel Letters
Our Quality Control Manager, Dan is showing some of the features of a UL Listed channel letter and the quality control tests.
The UL test and mark on products show that the product passed a stringent testing regiment. This assures quality and safety. I would never advise buying letters or any other electrical products that do not have the UL Mark.
Here is another interesting video on the importance of buying UL Certified. www.nbcnews.com