46mm Flat Glazing Packers

46mm Flat Glazing Packers are wide plastic packers designed for glazing installations where a larger bearing surface is required.

Measuring 46mm x 100mm, FP46 packers provide a wider contact area than 40mm and 44mm packers. This makes them suitable for wider frame systems, larger sealed units, and applications where the installer wants a broad, stable base beneath the glass.

Made from polypropylene, these packers are rigid, durable, and moisture-resistant. They help support the unit evenly, maintain correct positioning, and provide controlled spacing during installation.

Why installers choose 46mm Flat Glazing Packers:

• Wide 46mm profile for larger glazing rebates
• Helps provide broad base support beneath sealed units
• Useful for larger windows, doors, conservatories, and curtain walling
• Suitable for spacing, levelling, lifting, and unit positioning
• Durable polypropylene construction for reliable support

These 46mm glazing packers are a strong choice when smaller packers do not give enough contact width and the job requires a wider, more stable packing solution.

What Each Thickness is Used For

1mm – Fine Positioning & Final Correction

Used for small finishing adjustments once the main packer height has already been set.

Best for:

• Final levelling adjustments
• Small height corrections
• Fine unit positioning
• Layering with thicker packers for exact spacing

2mm – Light Packing & Small Gap Support

Useful when only a slight lift or small correction is needed.

Best for:

• Minor spacing work
• Small gaps under sealed units
• Light levelling corrections
• Fine adjustment in wider rebates

3mm – Standard Glazing Support

A practical thickness for routine packing and installation work.

Best for:

• Everyday sealed unit support
• General window and door glazing
• Routine height adjustment
• Building up packer height in controlled layers

4mm – Medium Adjustment & Stable Support

Used where a moderate lift is required during installation.

Best for:

• Medium gap filling
• Levelling larger glazed units
• Supporting units in wider frame systems
• Correcting uneven base areas

5mm – Larger Lift & Firmer Base Packing

Provides more height and stronger support where the space beneath the unit is larger.

Best for:

• Larger installation gaps
• Heavier sealed units
• Door and conservatory work
• Base support beneath wider glazed sections

6mm – Thick Support for Heavy Adjustment

The thickest FP46 option, useful when a larger lift or firmer support point is required.

Best for:

• Deeper rebates
• Heavy-duty support points
• Larger window or door systems
• Raising units to the required installed height