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4" x 25', R-8.0 Insulation, Flexible Ducting

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(2 Reviews)

Alpine AG-B8FLX4

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HIGHLIGHTS

This flexible ducting is manufactured with a galvanized wire helix contained in continuous encapsulating layers of tough polyester film forming a smooth flowing, airtight inner core. The core is surrounded by a thick blanket of fiberglass insulation which is enveloped by a tear-resistant fiberglass scrim. Encasing the entire assembly is a tough, UV-inhibited polyethylene jacket, providing a durable outer vapor barrier.

Standard Features:

  • Maximum velocity: 6000 FPM
  • Maximum positive pressure: 10" W.C.
  • Maximum negative pressure: 1/2" W.C.
  • Operating temperature: -20 to 200°F (Intermittent) / -20 to 180°F (Continuous)
  • Minimum bend radius is equal to the diameter.
  • ETL Listed / Approved
  • Formaldehyde-free fiber glass insulation

Specifications

Duct Diameter Inches

The interior diameter of the round duct.

Duct Diameter Inches
4 inches

Accessories

90 DEGREE REGISTER BOOTS
Alpine 90RB2124

2 1/4" x 12" 90° Register Boot, 4" Round Pipe Connection

$5.99 Qty:
Alpine 90RB4104

4" x 10" 90° Register Boot, 4" Round Pipe Connection

$5.99 Qty:
Alpine 90RB4124

4" x 12" 90° Register Boot, 4" Round Pipe Connection

$3.99 Qty:
ADJUSTABLE ELBOWS AND ANGLES
Alpine 90AE430

4" Diameter, 30 Gauge 90° Adjustable Elbow

$2.99 Qty:
DUCT TAKE-OFFS
Alpine AG-CLR4

4" Round Duct Take-Off Collar

$2.99 Qty:
Alpine TOD4

4" Takeoff with Damper

$7.99 Qty:
MISCELLANEOUS DUCTING SUPPLIES
Bay State Cable Ties B36H9L

36" Ties 175lb - 50 Pack

$9.99 Qty:
STRAIGHT BOOTS
Alpine SRB2124

2 1/4" x 12" Straight Register Boot, 4" Round Pipe Connection

$5.99 Qty:
Alpine SRB4124

4" x 12" Straight Register Boot, 4" Round Pipe Connection

$5.99 Qty:
TOOLS
Diversitech 640-UL25

Diversitech 640-UL25 Foil Tape

$24.99 Qty:

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