1-1/2"x420'(6'Length)Standard ClosedCell BackerRod

Acrow-Richmond
#1 1/2" BR

A backer rod is used for concrete precast building. Backer rods are inserted between the concrete panels to fill the gap, thus providing a 'backer' for the caulking that is applied. These backer rods can be used around doors, windows, wall joints, as well as foundations.