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This Elliptical Ducting is used in tunnels with low cross sectional area where it can beaccommoded due to its unique feature. The Ducting will be supported withElliptical Steel Rings held in position with PVC Ducting material on the outerperiphery of the Ducting at every 1 Mtr. The Ducting will be supplied inlengths of 20/25/30 Mtrs. +/- 10% complete with Double Suspension Hooks forhanging and suitable leak proof Zipper/Velcro joints.
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