These 20–50mm cardboard frame corner protectors are ideal for protecting standard picture frames, mirrors, photo frames and artwork during packaging, storage and shipping. Made from rigid kraft cardboard, they act as strong corner guards and edge protectors for small to medium frames.The overlapping design ensures full coverage without gaps, providing dependable frame shipping protection and reducing the risk of damage. Suitable for artwork packaging, recyclable frame packaging and eco frame storage solutions, these protectors are widely used by artists, collectors and framers.This product is FSC Mix Certified (FSC C011018), confirming the cardboard is sourced from responsibly managed forests, recycled content and other controlled sources. Fully recyclable after use, these cardboard edge guards offer a practical and eco frame packaging choice.