Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.
  • Your
    Lists

    Your Lists

    • Create unlimited lists
    • Save products you buy together
    • Share lists with your team
    • Add lists straight to your cart

    Sign in to get organized with lists:

    Sign In
  • Delivery
    Pickup

    Delivery & Pickup

    Sign in to select delivery/pickup and account options.

    Sign In

  • Cart
    0
    Your cart is empty.
Win a GREEN EGG or YETI COOLER
Try our New Online Tech Support Service! - Click Here

Flex Duct

Sub-Categories

Insulated Flex Insulated Flex
Uninsulated Connectors Uninsulated Connectors
Sleeves Sleeves
Grid
List
  1. 1
  2. 2
Items 1–36 of 67 total
Brand
  1. Southwark 1
  2. Thermaflex 66
Composition
  1. Black Polyethylene 1
  2. Clear and Metallized Polyester Film 3
  3. Fiberglass 52
  4. Metalized Polyester Film 1
  5. Strong Polyester film laminated and encapsulating a heavy corrosion resistant steel wire helix, forms the inner core and supports a thick blanket of fiberglass insulation over a fiberglass scrim. The outer vapor barrier is a bidirectional reinforced metal 8
  6. Type 100A special aluminum alloy 1
Jacket Material
  1. Black Polyethylene 15
  2. Fiberglass-Reinforced, Metallized Film Vapor Barrier 1
  3. Laminated Polyester Film 38
  4. None Specified 1
  5. Vapor Barrior 8
R-Value
  1. R4.2 14
  2. R6 15
  3. R8 33
Tier
  1. KM 46
  2. KP 15
  3. MC Air Connector 4
Color
  1. Black, Pink 15
  2. Blue 1
  3. Gray 2
  4. Silver 2
  5. Silver, Pink 47
Size
  1. 10" x 25' 7
  2. 12" x 25' 7
  3. 14" 1
  4. 14" x 25' 6
  5. 16" x 25' 5
  6. 18" x 25' 4
  7. 20" x 25' 2
  8. 4" 1
  9. 4" x 25' 4
  10. 4" x 8' 1
  11. 5" 1
  12. 5" x 25' 5
  13. 6" 1
  14. 6" x 25' 6
  15. 6" x 50' 2
  16. 7" x 25' 5
  17. 8" x 25' 6
  18. 8" x 50' 1
  19. 9" x 25' 2
  20. Show more options
Product Price Actions
Thermaflex - TechPure 12" x 25' Antimicrobial Flex Duct R8 Box
Thermaflex - TechPure 12" x 25' Antimicrobial Flex Duct R8 Box
Item: FD-12X25-R8AM
MFR: 052212000003
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 4" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 4" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-4X25-R8BV
MFR: 052304000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 5" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 5" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-5X25-R8BV
MFR: 052305000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 6" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 6" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-6X25-R8BV
MFR: 052306000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 7" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 7" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-7X25-R8BV
MFR: 052307000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 8" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 8" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-8X25-R8BV
MFR: 052308000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 10" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 10" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-10X25-R8BV
MFR: 052310000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 12" FlexVent KpInsulated Flex Duct R8 Box
Thermaflex - 12" FlexVent KpInsulated Flex Duct R8 Box
Item: FD-12X25-R8BV
MFR: 052312000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 14" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 14" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-14X25-R8BV
MFR: 052314000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 16" FlexVent KP Insulated Flex Duct R8 Box
Thermaflex - 16" FlexVent KP Insulated Flex Duct R8 Box
Item: FD-16X25-R8BV
MFR: 052316000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 5" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 5" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-5X25-R42F
MFR: 053705000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 6" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 6" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-6X25-R42F
MFR: 053706000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 7" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 7" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-7X25-R42F
MFR: 053707000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 8" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 8" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-8X25-R42F
MFR: 053708000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 10" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 10" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-10X25-R42F
MFR: 053710000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 12" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 12" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-12X25-R42F
MFR: 053712000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 14" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 14" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-14X25-R42F
MFR: 053714000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 16" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 16" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-16X25-R42F
MFR: 053716000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 18" FlexVent KM Insulated Flex Duct R4.2 Box
Thermaflex - 18" FlexVent KM Insulated Flex Duct R4.2 Box
Item: FD-18X25-R42F
MFR: 053718000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 4" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 4" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-4X25-R6F
MFR: 053804000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 5" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 5" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-5X25-R6F
MFR: 053805000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 6" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 6" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-6X25-R6F
MFR: 053806000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 6" x 50' FlexVent KM Insulated Flex Duct R6 Bag
Thermaflex - 6" x 50' FlexVent KM Insulated Flex Duct R6 Bag
Item: FD-6X50-R6F
MFR: 053806000003
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 7" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 7" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-7X25-R6F
MFR: 053807000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 7" KM R6 Flex-Vent Insulated Flexible Air Duct (Bag)
Thermaflex - 7" KM R6 Flex-Vent Insulated Flexible Air Duct (Bag)
Item: FD-7X25-R8FB
MFR: 053807000002
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 8" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 8" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-8X25-R6F
MFR: 053808000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 8" x 50' FlexVent KM Insulated Flex Duct R6 Bag
Thermaflex - 8" x 50' FlexVent KM Insulated Flex Duct R6 Bag
Item: FD-8X50-R6F
MFR: 053808000003
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 10" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 10" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-10X25-R6F
MFR: 053810000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 12" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 12" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-12X25-R6F
MFR: 053812000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 14" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 14" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-14X25-R6F
MFR: 053814000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 16" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 16" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-16X25-R6F
MFR: 053816000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 18" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex - 18" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-18X25-R6F
MFR: 053818000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex® 20" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Thermaflex® 20" KM R6 Flex-Vent Insulated Flexible Air Duct (Box)
Item: FD-20X25-R6F
MFR: 053820000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 10" FlexVent KP Insulated Flex Duct R6 Box
Thermaflex - 10" FlexVent KP Insulated Flex Duct R6 Box
Item: FD-10X25-R6BV
MFR: 054210000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 6" FlexVent KP Insulated Flex Duct R4.2 Box
Thermaflex - 6" FlexVent KP Insulated Flex Duct R4.2 Box
Item: FD-6X25-R42BV
MFR: 054706000001
What’s the price?
Sign in for pricing.
Save To List
Thermaflex - 8" FlexVent KP Insulated Flex Duct R4.2 Box
Thermaflex - 8" FlexVent KP Insulated Flex Duct R4.2 Box
Item: FD-8X25-R42BV
MFR: 054708000001
What’s the price?
Sign in for pricing.
Save To List
Grid
List
  1. 1
  2. 2
Items 1–36 of 67 total
Nu-Calgon Spend $250 Earn $10