Flex King HD - Heavy Duty Flexible Chimney Liner for Tough Jobs and Wood Burning Systems
HD stands for Heavy Duty
Flex King HD is the ultimate lining system for tough jobs and wood burning systems. Perfect for all wood burning appliances, especially those with tight chimney clearances and less than perfect flue conditions.
Why it’s the best?
- Superior Durability
- Easy to Clean
- Minimal Creosote Build-Up
- Excellent Draft
- Takes Abuse Like No Other Liner
Select your kit type:
If you are installing a fireplace insert then you need our Insert Kit which in most cases will be a 6 inch diameter kit.
If you are installing a liner for a furnace, boiler, or free standing stove then you need our Tee Kit. Most of the time this calls for a 6 inch diameter kit.
Note: If you are installing the liner in an 8×8 flue make sure you have enough room for the liner. Flex King HD has an OD 3/16 inch more than the ID. If you insulate that will increase the OD by either 1/2 inch or 1 inch depending on the insulation thickness you choose.