# Master Flow 8 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket

**Brand:** [Master Flow](https://shop.coreranger.com/brands/Master%20Flow)
**SKU:** F6IFD8X300
**Price:** $76.98 · in stock
**URL:** https://shop.coreranger.com/product/master-flow-8-in-x-25-ft-insulated-flexible-duct-r6-silver-jacket-100396936

## Specifications

| Spec | Value |
|---|---|
| Color | Silver Jacket |
| Model # | F6IFD8X300 |
| Material | Fiberglass |
| Insulated | Yes |
| Pack Size | 1 |
| Internet # | 100396936 |
| Returnable | 90-Day |
| Store SKU # | 685764 |
| Insulation R-Value | 6 |
| Product Width (in.) | 11.5 in |
| Product Length (in.) | 300 in |
| Wall Thickness (in.) | 1.75 |
| Maximum air flow (CFM) | 200 |
| Product Diameter (in.) | 8 |
| Certifications and Listings | ETL Listed,UL Recognized |

## Description

The Master Flow 8 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• R6 fiberglass insulation is perfect for heating and A/C systems
• Galvanized core wire resists rust and corrosion
• Insulated duct can withstand up to 200°F