46mm Flat Glazing Packers are wide plastic packers designed for glazing installations where a larger bearing surface is required. Measuring 46mm x 100mm, FP46 packers provide a wider contact area than 40mm and 44mm packers. This makes them suitable for wider frame systems, larger sealed units, and applications where the installer wants a broad, stable base beneath the glass. Made from polypropylene, these packers are rigid, durable, and moisture-resistant. They help support the unit evenly, maintain correct positioning, and provide controlled spacing during installation. Why installers choose 46mm Flat Glazing Packers: Wide 46mm profile for larger glazing rebates Helps provide broad base support beneath sealed units Useful for larger windows, doors, conservatories, and curtain walling Suitable for spacing, levelling, lifting, and unit positioning Durable polypropylene construction for reliable support These 46mm glazing packers are a strong choice when smaller packers do not give enough contact width and the job requires a wider, more stable packing solution. What Each Thickness is Used For 1mm – Fine Positioning & Final Correction Used for small finishing adjustments once the main packer height has already been set. Best for: Final levelling adjustments Small height corrections Fine unit positioning Layering with thicker packers for exact spacing 2mm – Light Packing & Small Gap Support Useful when only a slight lift or small correction is needed. Best for: Minor spacing work Small gaps under sealed units Light levelling corrections Fine adjustment in wider rebates 3mm – Standard Glazing Support A practical thickness for routine packing and installation work. Best for: Everyday sealed unit support General window and door glazing Routine height adjustment Building up packer height in controlled layers 4mm – Medium Adjustment & Stable Support Used where a moderate lift is required during installation. Best for: Medium gap filling Levelling larger glazed units Supporting units in wider frame systems Correcting uneven base areas 5mm – Larger Lift & Firmer Base Packing Provides more height and stronger support where the space beneath the unit is larger. Best for: Larger installation gaps Heavier sealed units Door and conservatory work Base support beneath wider glazed sections 6mm – Thick Support for Heavy Adjustment The thickest FP46 option, useful when a larger lift or firmer support point is required. Best for: Deeper rebates Heavy-duty support points Larger window or door systems Raising units to the required installed height
