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Multivault and Marvault barrel vaults are modular rooflight systems which are capable of providing continuous runs of unlimited length in roofs, walkways or canopies. With a choice of Multivault GRP for industrial applications, Multivault SSR designed specifically for use in standing seam roofs, the architectural secret fix Marvault polycarbonate vault for rooflights and canopies, there are options for a range of commercial and industrial applications. Multivault and Marvault barrel vaults can be supplied to any length and are designed to specific project requirements.