Dundas Jafine BPC425R6 4" x 25' nsulated Black Jacket Flexible Insulated Duct R6, 25 Foot

- 4 in. x 25 Length- R6 Insulation value. Required minimum in many building codes across the country- Polyethylene jackets provide a durable - scuff- resistant vapor barrier that provides improved protection against damaging ultra- violet light.- Installation is made easy with the reinforcing fiberglass yarn scrim - which acts as a rip- stop and prevents tearing- Rigorously tested by Underwriters Laboratories - Inc. in accordance with UL 181 - The Standard for safety in Factory- Made Air Ducts and Air Connectors.