Mixed U Packers – 5mm Green, 3mm Red & 2mm Yellow | Polypropylene Plastic Shims for Windows, Doors & Leveling

Upgrade your toolkit with our Mixed U Packers – a versatile combination of 5mm Green, 3mm Red, and 2mm Yellow polypropylene plastic shims. Perfect for installers, glaziers, and tradespeople, these U-shaped packers are ideal for aligning and levelling windows, doors, frames, and flooring.

✅ High-Visibility Colour Coding – Makes on-site identification quick and easy

✅ Precision Engineered – Manufactured in the UK from durable polypropylene plastic

✅ U-Shaped Design – Easily slots around screws, bolts, and fixings without removal

✅ Low Compression – Maintains structure under pressure without crushing

✅ Trusted by Professionals – Used across construction, glazing, and joinery

Whether you’re correcting alignment issues or packing out fittings, this mixed pack gives you the right thickness every time.

Common Use Cases

• Glazing installation
• Door and frame levelling
• Flooring support
• General construction spacing

Material: Polypropylene

Thicknesses Included:

• 5mm (Green)
• 3mm (Red)
• 2mm (Yellow)

Frequently Asked Questions

What are mixed U packers used for?

• Mixed U packers are used to level, align, and space windows, doors, frames, and other structural fittings. The U-shape allows them to slot around screws or bolts without needing to remove fixings, saving time on-site.

What thicknesses are included in this mixed pack of U packers?

• This pack includes three commonly used sizes:

• 5mm Green

• 3mm Red

• 2mm Yellow

   

  Each size is colour-coded for easy identification and quick selection during installations.

Are these U packers suitable for glazing work?

• Yes, these U-shaped plastic shims are ideal for glazing. They are widely used by professional window fitters and installers for aligning window frames, maintaining even spacing, and ensuring a level fit.

What material are the U packers made from?

• These packers are made from durable polypropylene plastic, designed to resist compression and deformation, even under heavy loads.

Can U packers be used for floor levelling?

• Absolutely. These plastic shims are frequently used in flooring applications to raise or level joists, battens, or tiles, especially where precision spacing is required.

Are these plastic U packers reusable?

• Yes – our polypropylene U packers are reusable, provided they remain undamaged. Their tough design makes them suitable for both temporary and permanent installations.

Where are your U packers manufactured?

• All of our U packers are proudly made in the UK, ensuring high-quality production and low carbon footprint for trade and commercial use.

Do the U packers fit around standard fixings?

• Yes. The U-shape is designed to slot easily around most standard screws, bolts, and anchor points – making adjustments and retrofitting quicker and easier on site.

Can I bulk buy mixed U packers for trade use?

• Yes. We offer multiple pack sizes (60, 120, 300, and 1,000). For larger quantities or pallet orders, please contact us directly for trade pricing and delivery options.