Sorry, the web browser you're using is not supported by this website.

Please use Google Chrome, Firefox, Safari, or another browser to access homex.com. Thank you.

Skip to main content

We use cookies to enhance your experience. For details on how we use cookies, collect data, & how to manage your consent please see our Cookie Policy & Privacy Policy.

How do you size a chimney pipe?

The first step is to find the cross-sectional area of the fireplace opening. 970 square inches of fireplace opening is equal to the W=36" X H 30". If the chimney height is more than 8' above the fireplace opening, you can divide the 970 by 12. This amount is 90.

Let's Get It Fixed!

HomeX virtual experts will assess your issue (for free!) and can resolve simple problems.

What Did You Think of This Article?

What Did You Think of This Article?

Shop Recommended ProductsShop HomeX Recommended Products