40% off Paints & Stains
30% off Painting Supplies
15% off Custom Order Wallpaper
Extended store hours at some stores:
Mondays and Fridays 7AM-8PM
Retail sales only. Discount taken off of full retail price. Sale pricing or other offers that result in greater savings will supersede this offer. Valid on retail products only. Excludes Multi-Purpose primers, Miniwax Wood Finishes Quarts, ladders, spray equipment & accessories and gift cards. Other exclusions may apply. See store or Sherwin-williams.com for details. Valid only at Sherwin-Williams and Sherwin-Williams operated retail paint stores.
^ See this for a wealth of information from the previous sale.
I have successfully used the 10 off 50 coupon on multiple purchase, each of which logged in my account.