U Packer 2mm Green (500/Box)

Green U Packers for the precise positioning of window and door frames. They can be easily slid around existing fixings without removing screws, helping to maintain accurate datum and line during set-out.Each packer is colour-coded for quick on-site identification. The rigid, non-compressible polymer provides a stable bearing under typical frame loads, while the internal comb design ensures a secure grip that resists movement during tightening and final fixing.The material is non-absorbent and non-staining, ensuring a clean, professional installation against both frames and substrates. These U shaped shims are balanced for minor packing and incremental adjustment beyond hairline corrections. Suitable for building in small steps while maintaining plane and plumb.Used singly for modest correction or paired with finer sizes for compound builds, they maintain consistent plane across the bearing face to protect frame profiles and finishes.The 2mm thickness is effective across first-fix and finishing.