Round Base Chimney Vacuum Cap – Galvanized

(18 customer reviews)

$10.48$150.16

  • Quality constructed from heavy-duty galvanized steel, 28-24 gauge depending on size (see more details below)
  • Increases updraft and prevents downdrafts caused from wind by forcing the wind to alter its direction over one of four gores on the cap, creating a partial vacuum
  • Designed to be mounted over single wall pipe and comes with a draw bolt collar for a secure fit
  • Positioning of the cap relative to the prevailing winds is not critical, but is slightly more effective when placed with the flat side facing the winds.
  • Available for single wall pipe sizes ranging from 3 inch to 12 inch outside diameter (not designed for double/triple wall pipe sizes)
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The FAMCO VCG round base vacuum chimney cap has been used for decades with gas, oil, coal, and wood burning chimneys. This chimney cap increases updraft and prevents downdrafts caused from wind. This works by forcing the wind to alter its direction over one of four gores on the cap. The change of direction creates an area of lower density air (partial vacuum) at the outlet of the pipe. Lower density air creates draft within the exhaust pipe, helping to remove exhaust gases and increasing overall efficiency. The positioning of the cap relative to the prevailing winds is not critical but is slightly more effective when placed with the flat side facing the winds. Quality constructed in heavy-duty galvanized steel, 3 inch – 5 inch are made with 28 gauge, 6 inch – 9 inch are 26 gauge, and 10 inch – 16 inch are 24 gauge.

The FAMCO VCG chimney cap has a round base and draw bolt for secure installation. The adjustable collar will only provide approximately ⅛ inch of play for tightening to the appropriate pipe size, and is not designed to expand to accommodate different pipe sizes or double/triple wall pipe sizes (NOT designed to fit X&⅛”, X&¼”, X&½”, etc.).Comes for pipe sizes ranging from 3 inch to 12 inch OD and heights ranging from 4¾ inch to 15 inch, see our specs sheet for more details. The FAMCO VCG chimney cap is manufactured by FAMCO in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us.

Download the Product Specs .PDF

Watch the product video on YouTube.

Download the Product Specs .PDF

Round Base Chimney Vacuum Cap - Galvanized

SKU: VCG

18 reviews for Round Base Chimney Vacuum Cap – Galvanized

  1. Jon W. (verified owner)

    This chimney cap is a solid gauge that should last a long time, and the adjustable closure is helpful for fit. The large sizes I needed was a custom order, but still I received them within a week, in perfect condition and the shipping cost was reasonable.

  2. Rod W. (verified owner)

    Chimney caps are obscenely priced for a lightweight piece of metal you can crumple up in your hands. So I was delighted to find the Famco caps that were MUCH more reasonably priced. They arrived when promised, and have a very strong feel to them. Heavier gauge metal and well made. I’ll install on my cabin next weekend, then await the cold days so I can build a fire and see how well they draw. But so far, I’m very impressed. If they draw well, I’ll be placing a second order when I put a wood burner in my garage. Thanks!

  3. Nicholas G. (verified owner)

    Excellent drafting even in windy conditions. Caps came quicker than expected, and install was very easy with the screws provided.

  4. Steve Ahler (verified owner)

    We have fought smoke from downdraft for over 3 years at our new home. I have added extensions, had chimney cleaned etc etc to no avail. This chimney cap is wonderful!!

  5. Mike Lidikay (verified owner)

    It works better than the one I had but the rain still get in the vent and goes down the inside of wall of the pipe to the stove.

  6. Chester Adkins (verified owner)

    This item really helped me. I couldn’t find the item in the area where I live. Thank you so much.

  7. robert aubel (verified owner)

    great service

  8. robert aubel (verified owner)

  9. Anthony S. (verified owner)

    Works fantastic… Glad we chose this product

  10. Jerry Hall (verified owner)

  11. Darrel Jones (verified owner)

  12. Sam (verified owner)

  13. Gregory Wiggs (verified owner)

    This is my second cap purchase of this style. The first one has lasted 4 years, galvanized I plan on replacing it this year. I really like the performance my woodstove has with it, the windier the better, I could probably get another year or two out of the old one but I am prepared now. Great cap design.

  14. Thomas (verified owner)

    Great Service

  15. John P. (verified owner)

    Looks great, exactly as advertised!

  16. Thomas (verified owner)

  17. John Wilson (verified owner)

    Great

  18. Anonymous (verified owner)

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Questions and answers of the customers

  1. A

    Yes, this vent can be painted - we recommend using Rust-Oleum paint.

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