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Unilok FR1 is a flexible duct manufactured "tough" for consumer and installer peace of mind. Unlike other types of flexible duct, UNILOK FR1 has an outer steel rib that ensures the product's integrity and correct diameter, even in the tightest bends. Due to its steel rib, it is not prone to glue failure or fatigue (sagging or ovalisation) from vibration with age like plastic ribbed or non-ribbed glued duct.
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Flexible Ducting - Unilok FR1