JOINTFLEX® BACKER ROD Closed Cell Polyethylene Filler  Click on Image to view full screen  VIEW PRODUCT  BROCHURE  CORKJOINT JOINTFLEX® BACKER ROD Closed Cell Polyethylene Filler are manufactured from closed cell polyethylene, are non-absorbing, are U.V resistant and have excellent weatherability properties. It is a type of material that is commonly used in construction projects as a...

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