Are the slates weather-proof for displying outdoors, or can they be protected by coating with a polyurethane or shellac?
Carole W. asked on Feb 5, 2013
I'm very sorry that we were unable to get to your question in a timely matter. Unfortunately, this deal is no longer available for purchase. I do apologize for any inconvenience. In the future, if you have a time sensitive question, please contact us at www.groupon.com/support or call (888) 375-5777. Thank you for your patience!
from Groupon replied on Feb 8, 2013