10mm Flat Glazing Packers are narrow plastic shims designed for accurate spacing, levelling, and support when fitting glazed units, doors, conservatories, and curtain walling systems. With a 10mm width and 100mm length, these packers are suitable for applications where a slimmer packer is required compared with standard 20mm, 24mm, or 28mm flat glazing packers. Made from polypropylene, they provide firm, non-compressible support under load and help installers achieve consistent alignment during glazing work. Why installers choose 10mm Flat Glazing Packers: Ideal for narrow glazing channels and tight fitting areas Helps level and support sealed units during installation Provides consistent spacing for accurate alignment Durable, non-compressible, and resistant to moisture Suitable for glazed units, doors, conservatories, and curtain walling These packers are especially useful where a standard-width glazing packer is too wide for the available space, but reliable support and adjustment are still required. What the 4mm Thickness is Used For 4mm – General Levelling & Medium Gap Filling The 4mm thickness is useful where a moderate adjustment is needed during glazing installation. It provides more lift than thinner packers while still allowing precise positioning of the glass unit or frame section. Best for: Medium spacing adjustments Levelling glazed units Supporting units in narrow glazing channels Correcting uneven gaps during installation General trade glazing work
