So WMS Glazing Packers 28mm x 100mm Flat Plastic Packers Ideal for Window & Door Frame Installation, Non Compressible Trade Grade (3mm White, 100)

SIX THICKNESSES, FOUR PACK SIZES — choose from 1mm, 2mm, 3mm, 4mm, 5mm or 6mm in quantities of 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