Glazing Packers 28mm x 100mm | Mixed Packs & Single Size | 40, 100, 200 & 1000 Count | Flat Plastic Packers for Window & Door Installation (2mm Black, 200)

• SIX THICKNESSES, FOUR PACK SIZES — choose from 1mm, 2mm, 3mm, 4mm, 5mm or 6mm in quantities of 40, 100, 200 or 1000; mixed packs of the most popular sizes also available; select your preferred option from the dropdown above
• 28mm × 100mm INDUSTRY-STANDARD SIZE — the professional fenestration footprint used across uPVC, timber, composite and aluminium window and door installations; solid flat packers sit cleanly under frame sills and within reveals without cutting or trimming
• SOLID HDPE — WON'T CRUSH, SWELL OR ROT — high-density polyethylene maintains its stated thickness under sustained frame load; zero moisture absorption means no height change over time in exposed or damp reveals, conservatory bases or ground-floor installations
• STACK TO ANY SHIM HEIGHT — combine thicknesses to achieve precise gaps quickly; consistent dimensional tolerances across every packer in the pack mean your stack height is always exactly what you calculate, course after course
• TRADE QUANTITIES FOR EVERY JOB SIZE — resealable bags (40, 100 and 200 count) for daily site use; 1000-count cardboard boxes for merchants, trade counters and installation companies with ongoing volume requirements

Professional-grade glazing packers manufactured to consistent dimensional tolerances for reliable performance on every installation. Sized at 28mm × 100mm — the industry-standard footprint for uPVC window and door frames — these flat solid packers sit cleanly under frame sills and within reveals to achieve precise level and plumb. Available in six thicknesses (1mm, 2mm, 3mm, 4mm, 5mm and 6mm) and in mixed or single-size quantities from 40 up to 1000, so you can buy exactly what suits your job size and stacking preference. Mixed packs eliminate jobsite guesswork: the 40-pack covers all six sizes for small installs and survey kits; the 100-pack focuses on the workhorse 2mm, 3mm and 5mm combination favoured by most fenestration installers. High-density polyethylene construction provides excellent compressive strength under load-bearing frames while remaining lightweight and moisture-resistant — no swelling, no rot, no corrosion. Stack multiple thicknesses to achieve any required shim height quickly and accurately. Suitable for uPVC windows, composite and timber doors, curtain walling, conservatories, roof lights and aluminium systems. Compatible with all major frame systems including Rehau, VEKA, Deceuninck, Schüco and Kommerling profiles. Packaged securely in polythene bags (40, 100 and 200 count) or robust cardboard boxes (1000 count) to protect stock during transit and on site. The 1000-count box format delivers significant cost-per-unit savings for trade buyers, merchants and installation teams with ongoing volume requirements. All thicknesses sold separately or as mixed packs — select your preferred option from the dropdown above.