12x100mm Bridge Glazing Packers are designed to provide a raised, stable support surface inside the glazing rebate. Bridge packers are commonly used beneath flat glazing packers to create a level packing point while helping keep drainage and ventilation paths open around the insulated glass unit. This is especially useful in uPVC glazing systems where water escape routes in the rebate should not be blocked during installation. With a 100mm length and 12mm width, these BP12 bridge packers are a narrow option for glazing channels where a slimmer bridge packer is required. The 5mm thickness provides a raised support platform for positioning the glazing unit correctly before final glazing and beading. Made from polypropylene, these packers are durable, moisture-resistant, and suitable for professional glazing installation work. Why installers choose 12x100mm Bridge Glazing Packers: Creates a raised support platform inside the glazing rebate Helps maintain drainage and ventilation around the glazed unit Designed for use with flat glazing packers Narrow 12mm width for slimmer glazing channels Useful for uPVC, aluminium, and timber glazing applications Durable polypropylene construction for trade use 5mm thickness for consistent raised support These 12x100mm bridge packers are a practical choice where installers need a slim bridge packer to support glazing packers while keeping the rebate clear for drainage and airflow. What the 5mm Thickness is Used For 5mm – Raised Support & Drainage Clearance Used where a raised packing platform is needed beneath the flat glazing packer. Best for: Supporting flat packers in the glazing rebate Maintaining drainage and ventilation routes Creating a stable base for sealed units Narrow glazing channels requiring a 12mm bridge packer Window, door, conservatory, and curtain walling installations