UK Stock
Specialist Packers
Load-Bearing Specialist Packers for Structural Glazing and Heavy Frames
Specialist packers are designed to handle higher loads and maintain precise spacing under structural pressure. Available as solid (ESQ) or slotted (ESL) variants, they provide durable, non-compressible support for demanding installations such as curtain walling, façades, and large-format door or window systems.
Made from reinforced polymer materials for exceptional strength and stability, these packers prevent frame distortion and maintain alignment under sustained loads.
All products are held in UK stock with trade pricing, VAT invoicing, and next-day delivery available.
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Which Specialist Packer Should I Choose?
- Solid Specialist Packers (Type ESQ) – For direct load-bearing support where fixings pass beside the packer. Suitable for heavy curtain walling, door thresholds, and frame alignment.
- Slotted Specialist Packers (Type ESL) – For installations where fixings pass through the packer. The central slot allows secure anchoring while maintaining precise spacing under heavy loads.
Specialist Packers – FAQs
Specialist packers are used in high-load or structural glazing applications, such as curtain walling, large doors, or heavy window frames, where standard packers may deform under pressure.
Solid packers (Type ESQ) support loads beside fixing points, while slotted packers (Type ESL) are designed to allow fixings to pass through the packer for direct anchoring.
Yes — these packers are specifically engineered for heavy or commercial-grade frames, façades, and door assemblies.
Yes — both solid and slotted packers are available in trade-size boxes, with discounts for large or recurring orders.
Yes — next-day delivery is available across most UK postcodes when ordered before the daily dispatch cut-off.