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918814-1 Polyethylene Closed Cell Foam, Caulk Backer Rod, Gray, 20 ft. Overall Length, 5/8" Overall Width, 5/ | Imperial Supplies
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Amazon.com: M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray : Industrial & Scientific
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3/8" Tundra Foam Open Cell Backer Rod | Open Cell Backer Rod for Hot and Cold Applications | RLOCBR38
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Uxcell 3/8 Inch x 32.8 Feet Backer Rod for Gaps and Joints Foam Rope Caulk Crack Joint Filler Roll Seal White - Walmart.com
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