44mm Flat Glazing Packers are extra-wide plastic glazing shims designed for installations where a standard-width packer may not provide enough contact area. With a 44mm width and 100mm length, FP44 packers give installers a broad support platform beneath the glazed unit. This can be useful in wider glazing rebates, larger frame systems, and applications where the unit benefits from a wider base support point. Made from polypropylene, these packers are rigid, durable, and moisture-resistant. They help maintain the correct position of the glass while providing consistent support during and after installation. Why installers choose 44mm Flat Glazing Packers: Extra-wide 44mm profile for broad unit support Useful for wider rebates and larger glazing systems Helps create a stable base beneath sealed units Suitable for windows, doors, conservatories, and curtain walling Rigid polypropylene construction for reliable support These 44mm glazing packers are a practical choice where a wider flat packer is required, but the installation does not need the full 1mm–6mm thickness range available in some other sizes. What Each Thickness is Used For 2mm – Light Adjustment & Slim Spacing Used where a small amount of extra height or correction is needed. Best for: Minor levelling work Light spacing in wide rebates Small corrections under glazed units Fine adjustment during installation 3mm – Everyday Wide-Channel Packing A useful general-purpose thickness for regular glazing work. Best for: Standard sealed unit support General window and door installations Routine spacing and levelling Controlled packing in wider channels 4mm – Medium Lift & Gap Correction Used when the unit needs a more noticeable adjustment or a firmer support point. Best for: Medium gap filling Levelling larger glass units Supporting units in wider glazing rebates Correcting uneven base areas 5mm – Stronger Support for Larger Gaps Provides additional lift and support where more packer height is required. Best for: Larger gaps beneath sealed units Heavier glazed sections Door and conservatory installations Base support where a wider packer is preferred
