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The 60cm rigid extension piece is an accessory designed for use with VELUX 10"/25cm rigid sun tunnels. It allows the extension of the sun tunnel by an additional 60cm, providing greater flexibility for installation. The extension piece comes with clips for easy installation and can be used to extend the sun tunnel up to a maximum of 6 meters. This is particularly useful when the distance between the roof and the ceiling is greater than the standard length of the sun tunnel kit. Please note that the extension piece is not compatible with flexible sun tunnels and is only suitable for use with VELUX 10"/25cm rigid sun tunnels.