45x100mm Frame Packers

45x100mm Frame Packers are Type K installation packers designed for frame fitting work where both width and length are important.

With a 100mm length and 45mm width, these packers provide a broad support area behind the frame. They are especially useful on larger window and door installations where a shorter packer may not give enough bearing length, or where installers want extra support around fixing points, hinge zones, locking areas, or wider frame sections.

The U-shaped design allows the packer to be placed around the fixing, helping to support the outer frame as the fixing is tightened. This helps prevent the frame from being pulled out of shape and supports a cleaner, more accurate installation.

Made from polypropylene, these frame packers are rigid, moisture-resistant, and suitable for regular trade use.

Why installers choose 45x100mm Frame Packers:

• Wide 45mm face with a longer 100mm support area
• Useful for larger window and door frame installations
• Helps support fixing points, hinge areas, and locking points
• U-shaped design allows fitting around the fixing area
• Helps keep frames plumb, square, and correctly spaced
• Suitable where extra bearing length is preferred

These 45x100mm frame packers are a strong option when the installation needs more support than a compact frame packer can provide, while still offering controlled thickness options for accurate adjustment.

What Each Thickness is Used For

1.5mm – Fine Adjustment Across a Wider Area

Used where only a slight correction is needed, but the installer still wants a wide and long support point.

Best for:

• Fine frame alignment
• Small gap correction behind larger frames
• Final positioning before fixing
• Layering with other packers for exact spacing

3mm – General Frame Support

A practical thickness for everyday window and door frame fitting.

Best for:

• Standard frame packing
• Supporting fixing areas
• Keeping frames level and square
• Small-to-medium installation gaps

5mm – Firmer Support for Larger Gaps

Used where a stronger spacer is needed to build out or support the frame.

Best for:

• Medium frame gaps
• Larger window and door sections
• Support near hinge or locking points
• Correcting more noticeable unevenness in the opening