The following article highlights five top through-the-wall chimney kits designed to pass chimney flues through exterior walls with safety, durability, and compliance in mind. Each option supports typical 6″ and 8″ diameter systems, featuring adjustable brackets, rain caps, and complete component sets. The products below are sourced from reputable brands and are commonly used in residential installations across the United States.
| Product | Diameter | Key Feature | Brand |
|---|---|---|---|
| Duravent 6″ DuraPlus Through the Wall Kit | 6″ | Secure twist-lock, supports long vertical runs | DuraVent |
| AllFuel HST Through The Wall Kit (18″ Length) | 6″ | Adjustable wall bracket, flat top cap | AllFuel HST |
| VEVOR Through The Wall Kit for 6-Inch Pipe | 6″ | All-in-one kit with rain cap and flashing | VEVOR |
| AllFuel HST Through The Wall Kit (8″ Diameter, 18″ Length) | 8″ | Adjustable wall bracket, flat top cap | AllFuel HST |
| Supervent 6″ Through the Wall Kit | 6″ | Easy twist-lock connection, UL/ULC listed | SuperVent |
Duravent 6″ DuraPlus Through the Wall Kit
This through-the-wall vertical installation kit is designed for 6″ DuraPlus chimney pipe. It uses a secure twist-lock design for simple assembly and installation. The kit is capable of supporting long vertical runs, up to about 40 feet of chimney pipe (pipe length not included). It is suitable for exterior walls where the chimney passes through, and it helps maintain proper clearances for safe operation. The setup is built to resist weather exposure and maintain a tight seal through the wall thimble.
AllFuel HST Through The Wall Kit (18″ Length)
AllFuel HST through-the-wall kit for 6″ diameter Class-A double-wall chimney pipe includes a flat top chimney cap and a choice of standard or adjustable wall brackets. It is designed to be compatible with AllFuel HST pipes, with pipe lengths sold separately. Measure wall thickness to determine the appropriate length, and account for exterior clearance when exposed. A wall bracket is required for every 8 feet of vertical rise above the base wall support. This kit offers versatility for installations where the pipe passes through a wall with exterior exposure or a chase.
VEVOR Through The Wall Kit for 6-Inch Pipe
VEVOR’s 6-inch through-the-wall kit provides a complete component set, including a stove pipe adapter, ceiling support box, ceiling bracket, roof flashing, storm collar, and a chimney cap. It’s designed as a one-stop solution for passing a chimney through an exterior wall. Add-on allowances require purchasing additional VEVOR straight pipes to reach your desired height. Constructed from SUS304 stainless steel, this kit emphasizes durability and corrosion resistance for long-term stability.
Supervent 6″ Through the Wall Kit
The SuperVent 6″ through-the-wall stainless steel kit uses an easy twist-lock connection for straightforward assembly. This model is safety tested and listed to applicable UL/ULC standards, suitable for residential installations. The kit’s compact design supports reliable through-wall installation with emphasis on safe operation and long-term performance in typical home chimney setups.
AllFuel HST Through The Wall Kit (18″ Length, Adjustable Bracket)
This AllFuel HST kit is designed for 6″ diameter Class-A double-wall chimney pipe and includes an adjustable wall bracket to accommodate wall thickness and exterior features. It requires selecting proper pipe lengths and bracket positions to maintain clearance and safe operation. As with other AllFuel HST components, it’s compatible only with AllFuel HST pipe systems and should be paired with the correct pipe lengths to achieve the desired vertical rise.
AllFuel HST Through The Wall Kit (12″ Length, Adjustable Bracket)
Another AllFuel HST option, this 12″ length kit focuses on compatibility with AllFuel HST Class-A double wall pipes. It includes adjustable wall brackets, allowing better fitting around overhangs or gutters. As with other AllFuel HST components, verify that the pipe lengths are purchased separately to reach the necessary through-wall height. The kit is designed for robust, corrosion-resistant performance in harsh exterior environments.
Buying Guide
- Wall thickness and exterior features: Accurate wall thickness measurement ensures you select the proper pipe length and bracket. Add extra length if the pipe will be exposed outside the house or enclosed in a chase.
- Bracket type and clearance: Adjustable brackets provide flexibility for various wall profiles and exterior features such as gutters or overhangs. Ensure the chosen bracket supports the required vertical rise and clearance.
- Pipe compatibility: Many kits are brand-specific (for example AllFuel HST). Mixing brands is generally not recommended, as class-A double-wall systems rely on matched components for proper sealing and performance.
- Through-wall components: Look for a complete kit that includes essential parts such as roof flashing, storm collar, rain cap, and a cap or top seal. A one-stop kit simplifies installation and reduces compatibility concerns.
- Durability and material: Stainless steel (such as SUS304) offers corrosion resistance and longer service life in outdoor environments. Consider exposure conditions when selecting materials.
- UL/ULC listings and safety: Confirm that the kit is safety tested and listed to applicable standards to ensure compliance with local codes and insurance requirements.
- Installation height and clearance: Plan for the total vertical rise from the base wall support, including the number of wall brackets needed for every 8 feet of rise. This helps maintain safe clearance and proper draft.
- Pipe length planning: Stock pipe lengths separately as needed, ensuring you can achieve the desired through-wall height without gaps or misalignment.