James Hardie Fiber Cement Siding with ColorPlus Technology resists damage from UV rays to keep the color on homes and other structures vibrant longer. HardiePlank fiber cement siding is Engineered for Climate allowing boards to hold up to harsh weather conditions in the environment where it is installed. Use a 2-1/2 in. siding gun or siding nailer to attach to wood, steel or masonry substrates. Cedar look siding board in an Arctic White color has a woodlike grain finish for a natural wood look. 5/16-in x 7.25-in x 12-ft Cedarmill lap board installs horizontally and resists pests that can damage wood siding. Cut outdoors using a circular saw with a fiber cement saw blade and a vacuum dust collection system. Fiber cement siding up to 7/16 in. may also be cut outdoors using an electric fiber cement cutting shear.