Vacu-Stack Chimney Cap

1 Review
$113.74 to $1,104.99
SKU: Vacu-Stack Chimney Caps
DESCRIPTION: The Vacu-Stack Chimney Cap is used to stop smoking and decrease downdrafts caused by wind. To install gently slide Vacu-Stack down the pipe. Vacu-Stack also serves as a cap, keeping out rain, snow and critters. When wind flows around the Vacu-Stack's unique design, wind speeds increase which creates a partial vacuum. This vacuum then pulls flue gases up and out of the chimney, thus preventing wind-induced downdraft and the resulting infiltration of smoke, odor, and flue gas into your home.
$113.74 to $1,104.99
  • Keeps out animals and debris
  • Durable
  • Stops smoking and decreases downdraft
Vacu-Stack VSS
The ideal chimney caps for single wall pipe!
The Vacu-Stack VSS Chimney Cap is a universal, solid pack, factory-built chimney cap used for round, single wall, Class “A”, and Type B gas vent chimney pipe. This cap is constructed of 26 gauge, 304 stainless steel and fits into pipe easily using the “spring fit” system - simply squeeze the base of the cap, slide it into the pipe, and the cap will grip firmly as it expands outwards.

Vacu-Stack Chimney Caps are primarily used for solving common wind-related chimney draft problems caused by conditions such as hills & mountains, tall trees, or tall buildings nearby.

The Vacu-Stack VSS Chimney Cap can also be used for masonry chimneys when paired with a masonry adapter (sold separately). This cap comes standard with no screen but is available with either 1" or 1/2”, clog resistant mesh screens. The Vacu-Stack VSS Chimney Cap is made in the USA, and features a limited lifetime warranty.

(Available with 1" mesh or 1/2" California mesh.)

Vacu-Stack VSS Chimney Cap Features:
  • Universal, Stainless Steel Cap for Single Wall, Factory Built Chimneys
  • 26 Gauge, 304 Stainless Steel
  • "Spring Fit" System Allow for Easy Installation
  • Two Collars Prevent Moisture Entry
  • Protects Against Animals, Debris, and Wet Conditions
  • Comes Available with 1" or 1/2", Clog-Resistant Mesh Screens
  • Made in the USA & Features Limited Lifetime Warranty

VSS-8126 x 10 oval1810
VSS-121610 x 14 oval2528
SIZES: Custom sizes available up to 48". Call for price and specific requirements.
CHIMNEY TYPES: Single wall, solid pack insulated, Class A, B ven t, and square or rectangular mai;onry
chimneys using ICP masonry adapter.
SCREENS : Also available with 1 " and 1/2" mesh screen openings. Check local regulations for what is
required in your area.
* Nominal dimension

Vacu-Stack VSS without Screen (PDF, 94KB) 
Vacu-Stack VSS with Screen (PDF, 106KB) 

Ratings & Reviews

1 review

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

No More Worries!!! Excellent Chimney Cap


I don't normally write reviews, but had to let folks know about my experience. After worrying about being smoked out of the house any time the wind blew stonger than 20 mph and waking up in the middle of the night to a house full of smoke, I found this fantastic chimney cap. We live in the Rocky Mountains and have a steeply pitched roof to shed snow. Anytime the wind blew, we'd get backdrafts down our chimney. As the father of three and trying to heat our home with wood, I was a nervous wreck anytime it got windy. This chimney cap has completely resolved the issue. I have noticed that the updraft has tapered off a bit over winter, likely because of sot build-up on the wire-mesh (sold separately) to keep birds from flying down the pipe, but I suspect I'll be able to easily restore the updraft flow again by cleaning it.
<br>I can't tell you how much better I sleep knowing I don't have to worry about downdrafts any more! Excellent product! Thank you!!