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Titan Foam Soft Type Backer Rod - 3/8", 3600 ft. per box - Sealant Engineering Construction Supply, Inc.
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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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M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480 : Amazon.co.uk: Business, Industry & Science
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