LL Building Products F6IFD4X300 Insulated Air Duct, 4 x 25′

Highlights:

• Metalized Jacket
• 25′ Silver Jacket
• Diameter : 4
• 2-ply inner core with smooth interior for more efficient air movement
• Durable. scuff resistant jacket. Zinc coated. high carbon steel wire helix
• 2 continuous blanket of glass fiber insulation
• R-Value 6.0