The 4mm Flexible Secondary Glazing – 30m Coil is a premium flexible PVC edge capping designed for the Clipglaze secondary glazing system and other applications using 4mm glazing sheets. It provides reliable edge protection while creating a neat, professional finish for secondary glazing panels and other sheet materials. Manufactured from durable flexible PVC, this 30-metre coil is simple to cut, fit, and install, making it suitable for both DIY and professional use. Specifically sized for 4mm acrylic, polycarbonate, styrene, and similar glazing sheets, it protects fragile edges while enhancing the overall appearance of the installation. Compatible accessories and alternative colours are available to complete your project.