Imperial MEA-0425-6 Insulated Flexible Duct, 4 Inch x 25 Feet

Highlights:

• Color: Silver
• Material: Poly
• Length: 25 feet
• Diameter: 4 inch
• Fiberglass insulation R-value: 6.0
• The fiberglass reinforced metalized outer jacket is extremely strong and will not unravel
• Meets UL 181 Class 1 Air Duct standards
• Easy-to-install flexible polyester duct
• Oversized core for a seamless fit on collars and register boxes