• DuraVent 3" to 4" PelletVent Pro Increaser — Black
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DuraVent 3" to 4" PelletVent Pro Increaser

DuraVent 3" to 4" PelletVent Pro Increaser

$128.99 USD
$137.00 USD $128.99 USD
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Model: 3PVP-X4ADB
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Step up from 3" to 4" vent — required for long runs and high elevations.

The DuraVent 3"-to-4" increaser (Black or Galvalume) lets you upsize to 4" PelletVent Pro, which ComfortBilt recommends when flue height exceeds 12 ft, at elevations above 5,000 ft, or when your layout exceeds the 3" EVL limit.

Works with any pellet stove installation using PelletVent Pro, regardless of stove brand. Pellet vent is system-specific at the joints — PelletVent Pro locks to PelletVent Pro and will not join another manufacturer's pellet vent.

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Free shipping over $300
No Sales Tax

Overview

Step up from 3" to 4" vent — required for long runs and high elevations.

The DuraVent 3"-to-4" increaser (Black or Galvalume) lets you upsize to 4" PelletVent Pro, which ComfortBilt recommends when flue height exceeds 12 ft, at elevations above 5,000 ft, or when your layout exceeds the 3" EVL limit.

Works with any pellet stove installation using PelletVent Pro, regardless of stove brand. Pellet vent is system-specific at the joints — PelletVent Pro locks to PelletVent Pro and will not join another manufacturer's pellet vent.

Why buy from StoveSource: Authorized dealer · No Sales Tax · Free shipping over $300 · Email or text 1-888-866-8206

Shipping & Returns

Free shipping on orders over $300 · ships in 1–3 business days.

Free shipping on orders over $300 to the continental US; a flat $24.95 shipping fee applies to orders under $300. Accessories and parts ship by parcel carrier (UPS, FedEx, or USPS), typically in 1–3 business days.

Returns. Unused, uninstalled items in original packaging can be returned within 30 days, subject to a 15% restocking fee.

Sold by StoveSource (authorized dealer). Ships directly from the brand's authorized distributor warehouse — see our Authorized Dealer page.