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6mm x 5m Size - White foam backer rod supplied in a 6mm diameter and 5m length, suitable for filling joints, gaps and cracks before sealant application. Flexible Foam Material - The soft foam structure bends easily and can be pressed into narrow spaces, making it practical for DIY sealing and repair work. Sealant Support - Helps create backing depth for sealant, supporting a cleaner finish while reducing the amount of sealant needed in deeper joints. Easy to Trim - The foam gap filler can be cut to the required length, allowing simple fitting around windows, doors, floors, walls and construction joints. Wide Application - Suitable for home improvement, decorating, maintenance, building work and general sealing preparation with compatible sealants.