30mm Flat Glazing Packers

30mm Flat Glazing Packers are wide plastic packing shims used to support, level, and position glazed units during installation.

At 30mm wide and 100mm long, these packers provide a broader contact area than common 20mm, 24mm, and 28mm packers. This makes them useful where installers want extra bearing width beneath a sealed unit or where the glazing channel allows for a wider support packer.

Made from polypropylene, FP30 packers offer rigid, non-compressible support and are suitable for trade glazing applications where the unit needs to remain stable, square, and correctly aligned.

Why installers choose 30mm Flat Glazing Packers:

• Wider 30mm face for greater contact under glazed units
• Helps spread support across the base of the unit
• Useful for larger windows, door units, conservatories, and curtain walling
• Suitable for levelling, spacing, and controlled height adjustment
• Polypropylene construction helps resist moisture, rot, and compression

These 30mm packers are a good option when standard-width packers do not provide the preferred contact area, especially on installations where stable base support and accurate positioning are important.

What Each Thickness is Used For

1mm – Fine Tuning & Final Positioning

Used when the unit is almost correctly positioned and only a small adjustment is needed.

Best for:

• Final levelling work
• Small gap corrections
• Fine height adjustment
• Combining with thicker packers for exact spacing

2mm – Light Packing & Minor Correction

Useful for small adjustments where a little more lift is needed.

Best for:

• Minor unevenness in the glazing channel
• Light unit support
• Small alignment corrections
• Adding controlled spacing under the unit

3mm – General Installation Packing

A practical everyday thickness for routine glazing jobs.

Best for:

• Standard sealed unit support
• General window and door installations
• Everyday spacing work
• Building up packer height with other thicknesses

4mm – Medium Gap Support

Used where the opening or channel requires a more noticeable adjustment.

Best for:

• Moderate levelling corrections
• Supporting larger glazed units
• Filling medium gaps
• Aligning frames or units during installation

5mm – Extra Lift & Stronger Support

Provides additional height and support for larger gaps or heavier units.

Best for:

• Heavier sealed units
• Larger door or window sections
• Base packing where extra lift is required
• More significant installation adjustments

6mm – Maximum Thickness in the Range

Used where a firm, thicker packer is needed for bigger gaps or heavier support points.

Best for:

• Larger spacing requirements
• Heavy-duty support areas
• Uneven glazing channels
• Raising units to the correct installed position