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DuraVent 3" - 5" Wall Thimble w/ Termination Damper

Original price $581.65
Original price $506.74 - Original price $603.01
Original price $581.65
Current price $405.32
$405.32 - $482.41
Current price $405.32
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DuraVent 3" - 5" Wall Thimble w/ Termination Damper

This DuraVent Wall Thimble with integrated Termination Damper is manufactured with high-grade, heat-resistant aluminized steel. It easily adapts to 3 - 5 inch chimneys and provides superior design and performance for your safety and convenience.

Use for horizontal through-the-wall terminations. Check installation instructions for restrictions on horizontal cap terminations, such as minimum distance from windows and doors. Accommodates wall thickness of 4 1⁄4” to 8 1⁄2”. Damper prevents backdraft of cold air to appliance. *Available in 316L Stainless Steel*


  • Available Inner Diameter : "3" - "5"
  • Fuel Types Compatible With: Gas
  • UL Listed: Yes
  • Length: 18"
  • Single Wall Construction

Typical Installation(Refer this if required):

Commercial Applications

Commercial projects may require custom parts and unique system designs. DuraVent offers complete project assistance:

  • Engineering Services: Personalized system design services offer comprehensive CAD submittal drawing and complete bills of materials.
  • Custom Parts: If your project requires innovative solutions, contact DuraVent for custom parts that meet your specific project needs.
  • FasNSeal W2: FasNSeal W2 is the ideal choice for commercial applications where there is a need for low clearances to combustibles.
  • Up to 16” Vent Diameters: Many commercial applications require large diameter systems due to the units size and output. Large diameters are available in single and double wall, featuring FasNSeal’s triple lipped directional gaskets and built-in locking band which provides a safe and convenient installation.

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