THERMAFLEX® M-KC R4.2 12 Insulated Flexible Air Duct, 12 in Dia, 25 ft L, R4.2, -2 to 10 in-WG, Fiberglass/Steel

Our premier product, the M-KC flexible duct offers a comprehensive solution to your HVAC duct needs. Its unique woven fiberglass core is the most durable core available and it promotes superior airflow. The rigid wire is permanently bonded to the core. Suitable for all pressure heating and cooling systems, it makes for easier and more affordable installation. The M-KC's bi-directional reinforced metallized jacket resists tearing.

THERMAFLEX® Insulated Flexible Air Duct, M-KC Series, 25 ft Length, 12 in Diameter, -2 to 10 in-WG, Fiberglass/Steel, R-Value: R4.2, 6000 fpm Velocity Rating, -20 to 250 deg F, 0.05 Vapor Transmission

• Highly-resistant to rust and corrosion
• Fully lined for efficient air delivery
• Large diameter, heavy, spring steel wire helix assures dimensional stability, resists mechanical abuse and provides more efficient air delivery
• Bi-directional reinforced metallized jacket resists tearing reduces chance of damage to vapor barrier
• Heavy woven and coated fiberglass cloth core assures quiet performance, core is almost impossible to puncture or tear
• No more concern about fiber in the air stream or loss of conditioned air
• Uniquely constructed core will not unravel when cut
• All components of M-KC are self-extinguishing and will not support flame
• Core will not deteriorate in a fire until the temperature reaches the melting point of glass
• Outward cast of helix keeps duct core from shrinking up inside insulation and jacket, resulting in less waste
• Heavy woven and coated fiberglass cloth core will not blow-out and eliminates costly call-backs
• Lower installed cost

• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/THERMAFLEX_M_KC_R4_2_04_Specification_Sheet.pdf
• Submittal https://assets.unilogcorp.com/267/ITEM/DOC/THERMAFLEX_M_KC_R4_2_04_Submittal.pdf