$63.99 ReliaBilt 1/2-in x 4-ft x 8-ft Maple Sanded Plywood in the Plywood department at Lowes.com
Should You Use Marine-Grade Plywood in Your Next Outdoor Project? | Marine grade plywood 
Sande Plywood (Common: 1/2 in. x 4 ft. x 8 ft.; Actual: 0.472 in. x 48 in. x 96 in.)-454532 
