Gray Flex 4″ x 25′ R8 Insulated Flex Duct Black HVAC MFG#GF-8-4in

SKU: GF-8*BAGGED4in.

Weight	9 lbs
Condition	New
Manufacturer Part Number	GF-8*BAGGED4in.
Brand	Gray Flex Systems Inc

$89.99

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	$89.99	0%
5–9	$85.49	5%
10+	$80.99	10%

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Gray Flex 4" x 25' R8 Insulated Flex Duct Black HVAC MFG#GF-8-4in

Specifications & product details

Gray Flex 4″ x 25′ R8 Black Insulated Flexible HVAC Duct

MFG# GF-8*BAGGED4in | REM# 9H804B

This listing is for a brand new 4 inch x 25 foot R8 insulated flexible HVAC duct by Gray Flex Systems Inc.

Designed for residential and light commercial HVAC applications, this duct features a black reinforced outer jacket, laminated inner core, and encapsulated wire helix for strength and flexibility.

🔧 Key Features:

4″ Inner Diameter
25 ft Length
R-8 Insulation Rating (Superior thermal efficiency)
Flexible for attic, crawlspace & tight installations
Durable reinforced core construction
Black outer vapor barrier jacket

📌 Ideal For:

Bathroom exhaust runs
Branch duct connections
Supply and return air lines
New installs or HVAC replacements

Provides excellent thermal resistance and reduced energy loss compared to lower R-value ducting.

📦 Includes:
(1) 4″ x 25′ R8 Insulated Flex Duct – Factory Bagged

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Shipping & availability

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