Sealey roof boxes and roof bars sealey rb500a a roof box from sealey manufactured from abs and abships high impact polystyrene for strength looks and durability offering a higher load capacity of 75kg finished in stylish metallic grey and benefits from triple point central locking supplied with the quick system for fitting to most common size roof bars tuvgs approved this version is a full width roof box and benefits from both left and right side opening sealey rb500a roof box meta