Builders Edge 3SMO815TW Mounting Block, Oversized, White, 18-1/4 in L, 11-3/8 in W, Fiber Cement

SturdiMount fiber cement blocks are manufactured using cellular PVC. Their engineered water management system maintains integrity with its innovative pre-flashed, pre-assembled design. The 12 color-matched colors provide a clean finished look you can't get anywhere else. Our trim white can be left white or painted.

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