7/8" Diameter Soft Cell backer rod for joint filling and sealant backing
6 INCH BACK ROD / CLOSED CELL 6 FT. PIECE
Foam Rod - Preservation Equipment Ltd
Foam Backer Rod - Full Coils – Log Home Mart
1/2" Diameter x 100' Length Backer Rod Caulk Saver Foam Backer Rod for Gaps and Joints Backing Rod Concrete Filler: Amazon.com: Industrial & Scientific
The Different Types of Backer Rod and Applications
Round Backer Rod | LogFinish.com
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
3/8" Tundra Foam Open Cell Backer Rod | Open Cell Backer Rod for Hot and Cold Applications | RLOCBR38