Stack hats keep out water, weather and soot. Made from high-quality polymer. Safe and easy to install and remove.

Dual kit includes two stack hats and an extension pole. No moving parts. Fits 6" stacks. 12-1/2"L. One hat is 6-1/2" dia., the other is 6-3/4" diameter. Hats stack inside one another for more compact storage.
Sold as a dual stack kit.

Available in red, blue or black.

Does not fit Peterbilt and Freightliner OEM curved top stacks. Will fit aftermarket curved top stacks.