Liner - Transitional Flex 3" - 4" 150

The Perma-Liner 3"–4" Transitional Flex Liner is a premium, multi-diameter CIPP liner engineered to seamlessly adapt between 4-inch and 6-inch pipelines without sacrificing strength or flexibility. Constructed from a non-woven, needle-punched polyester felt reinforced with a scrim layer, this liner provides excellent dimensional stability and resin retention for reliable inversion and curing. Its flexible design easily negotiates 90° bends and offsets, making it ideal for lateral-to-main transitions and connection repairs.