5″ x 25′ R8 Insulated Flex Duct HVAC Silver Gray Flex 4GF-8*5

SKU: 4GF-8*5 BAGGED

Weight	22 lbs
Dimensions	48 × 20 × 20 in

$95.22

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$95.22	0%
5–9	$90.46	5%
10+	$85.70	10%

Estimate for this quantity before shipping. Tax display follows store settings. Existing cart quantities can increase the tier. Only one offer applies; a coupon replaces automatic pricing. For 20+ units, contact support for a quote.

Available to order.

Bulk quantity & quote

Quantity needed

Enter the total quantity you need. We will confirm availability and a quote before you order.

Need a firm ship date? Availability may include supplier stock. Confirm availability before ordering for time-sensitive work.

5" x 25' R8 Insulated Flex Duct HVAC Silver Gray Flex 4GF-8*5

Specifications & product details

Overview

This 5″ x 25′ R8 Insulated Flexible Duct is designed for residential and light commercial HVAC applications requiring high thermal efficiency and flexible installation.

Manufactured with a reinforced metalized polyester outer jacket and double laminated black polyester inner core, this duct features an encapsulated wire helix for structural support and flexibility.

Key Benefits:
• R8 insulation reduces energy loss
• Helps prevent condensation in attic installations
• Ideal for supply and return air runs
• Flexible design works around framing and tight spaces
• Durable outer jacket resists tearing

Specifications:
• Diameter: 5 inches
• Length: 25 feet
• Insulation Rating: R8
• Brand: Gray Flex Systems
• Model: 4GF-8*5 BAGGED
•

Condition

Brand New

Perfect for:
• New HVAC installs
• System upgrades
• Attic re-ducting
• Energy-efficient retrofits

Designed to meet modern HVAC insulation performance standards while maintaining ease of installation.

Product details

Part / SKU	4GF-8*5 BAGGED

Package includes

5" x 25' R8 Insulated Flex Duct HVAC Silver Gray Flex 4GF-8*5

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

Shipping methods and charges appear at checkout where available. Freight, oversized and specially handled items may require a quote. See our Shipping Policy for processing periods, restrictions and delivery information.