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Poly Foam Caulk Saver acts as a filler in large gaps before applying caulk.  Insulates and cushions.  Use in pavement cracks  wall joints and foundations.<br><br>

M-D Backer Rod For Gaps & Joints, 71480, Gray, 1/2&quot; x 20'

backer-rod-for-gaps-and-joints-71480-gray-1-2-inch-x-20-foot

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