30x40mm Frame Packers

30x40mm Frame Packers are compact plastic frame packers designed for accurate spacing and alignment during window and door installation.

With a 40mm length and 30mm width, these Type F packers offer a useful balance between size and support. They are larger than very small frame packers but still compact enough for restricted areas, making them suitable for packing around fixing points, side gaps, and frame-to-opening adjustments.

Made from polypropylene, these packers provide firm, consistent support and are suitable for professional installation work where the frame must be kept level, square, and correctly positioned before fixing.

Why installers choose 30x40mm Frame Packers:

• Practical 30x40mm size for common frame packing jobs
• Useful around window and door fixing points
• Helps keep frames correctly spaced and aligned
• Compact enough for restricted fitting areas
• Polypropylene construction for firm, durable support

These 30x40mm frame packers are a versatile option for installers who need a compact frame spacer with several thickness choices for fine, light, and medium adjustment work.

What Each Thickness is Used For

1mm – Fine Frame Spacing

Used when only a very small correction is required.

Best for:

• Final alignment before fixing
• Small frame gap adjustments
• Fine spacing behind window and door frames
• Layering with other packers for exact positioning

2mm – Light Correction & Small Gaps

Useful where the frame needs a small but noticeable adjustment.

Best for:

• Light levelling work
• Minor unevenness in the opening
• Small packing corrections around fixing points
• Controlled gap setting during installation

3mm – General Frame Packing

A practical everyday thickness for standard frame fitting work.

Best for:

• Routine window and door installation
• Standard frame spacing
• General alignment support
• Packing around common fixing areas

5mm – Medium Gap Support

Used when a firmer spacer or larger adjustment is needed.

Best for:

• Medium frame gaps
• More noticeable alignment corrections
• Supporting frames in uneven openings
• Building out the frame before final fixing