RAM - Combi-Duct: Lightproof Ducting Metal Work these filters outperform competitors

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RAM - Combi-Duct: Lightproof Ducting Metal Work these filters outperform competitorsThe lightproof flexible ducting from RAM is a four layer multi laminated construction with an encapsulated high tensile steel wire helix which ensures strength and durability. The black PVC outer is plant safe and is a strong vapour light barrier which ensures extra air tightness over a standard alloy ducting while remaining very flexible. Due to the four layer structure, this ducting holds its shape with a seamless void when fully extended,