13x13 Chimney Cap Home Depot. Shop today and get free shipping on select items. Align the open bottom of the cap with the top of your chimney flue.
The cap separates the wind stream as it flows over the cap, while the rotating hood is kept in proper position (relative to the wind) by the wind vane. Stainless steel chimney caps are the best solution for your chimney. Chimney caps & guards at ace hardware.
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So, for example, a top mounting chimney cap with a screen size of 13 by 17 inches will cover 16 by 20 inches of the top of your chimney. The lyemance damer eliminates as much as 90% of the air loss of a traditional damper, proving to save you up to $100 in a single heating session. Air movement past the hood creates a partial vacuum in the flue. Simply measure the exterior dimensions of the extending chimney flue and bolt a chimney cap to the top of this flue.
