Ekena Millwork 21 1/2"W x 26"H True Fit PVC Four Board Joined Board-n-Batten Shutters w/Z-Bar, Unfinished (Per Pair - Hardware Not Included) - Walmart.com
Board and Batten Shutters: An Easy DIY Tutorial
Buy sample board and batten composite exterior shutters
Amazon.com: Ekena Millwork 10 3/4"W x 29"H True Fit PVC Two Board Joined Board-n-Batten Shutters, Fire Red (Per Pair - Hardware Not Included) : Everything Else