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 5" stacks. 12-1/2"L. One hat is 5-1/2" dia., the other is 5-3/4" 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.

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.

Stack Hats are safe and easy to install & remove with the extension pole. Extension quickly expands to make installation and removal a snap and collapses to make storage easy. For mounting StackHAT onto straight stacks up to 13 feet off the ground. Collapses to 20".

Stack hats keep out water, weather and soot. Made from high-quality polymer. Safe and easy to install and remove. No moving parts. Fits 5" stacks.

Available in red, blue or black.

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

Stack hats keep out water, weather and soot. Made from high-quality polymer. Safe and easy to install and remove. No moving parts. Fits 6" stacks.

Available in red, blue or black.

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