HY-C Company
HY-C Draft King Single Flue 18" Round Slip-In Stainless Steel Chimney Cap
Best durable chimney protection for coastal oil, coal, or wood burners.
Protect your chimney with the HY-C Draft King Single Flue Chimney Cap. Constructed from durable 304 stainless steel, this cap is built to withstand harsh conditions, including areas within 25 miles of a saltwater coast. It features a 24-gauge stainless steel hood with scalloped corners and roll-formed edges, a 3/4" expanded stainless steel mesh, and an integrated 16-gauge stainless steel base for enhanced strength. The outside mounting design ensures maximum free air space for uninhibited chimney draft, making it ideal for oil, coal, or heavy wood burner chimneys. Made in the USA and backed by HY-C's Lifetime Limited Warranty. This HY-C Draft King Chimney Cap is a robust and cost-effective solution for chimney protection in most climates. Engineered with an outside mounting design, it maximizes free air space to ensure an unimpeded chimney draft. Constructed from 100% 304 stainless steel, it features a 24-gauge hood with scalloped corners and roll-formed edges, and a 16-gauge base for enhanced durability. The 18-gauge stainless steel mesh effectively arrests sparks and helps reduce downdrafts, while the inward-turned mesh at the base seals gaps against wildlife. It's made in the USA and offers a lifetime limited warranty. Ideal for oil, coal, or heavy wood burner chimneys, and suitable for applications within 25 miles of a saltwater coast.
$273.69
Owner Satisfaction
4.5
/ 5
Category Rank
181
/ 671
#181 in Furnace & Boiler Accessories
Price vs Category Average
+37%
Above average
Material
100304
/ % Stainless Steel
Who it's for
- Homeowners living in climates with harsh, corrosive weather
- DIY enthusiasts wanting a quick, tool-free installation
- Property owners seeking to block pests and improve airflow
Who should skip it
- Budget-conscious buyers prioritizing lower upfront costs
- Owners with non-standard or square chimney flue openings
- Users with damaged or irregularly shaped flue liners
Performance breakdown
Corrosion Resistance
Premium 304 stainless steel thrives even in harsh coastal environments.
Draft Efficiency
Outside mounting design ensures maximum airflow for optimal chimney performance.
Structural Integrity
Heavy-gauge steel construction provides exceptional durability against high winds and debris.
Wildlife Protection
Inward-turned mesh effectively seals gaps to keep unwanted pests out.
Installation Ease
Slip-in design allows for a straightforward, secure fit on round flues.
Spark Arrestance
Robust 18-gauge mesh reliably contains embers for safer chimney operation.
Key Specs
Material
100% 304 Stainless Steel
Hood
24-gauge Stainless Steel
Mesh
18-gauge 3/4" Expanded Stainless Steel
Base
16-gauge Stainless Steel
Durability
Suitable for applications within 25 miles of a saltwater coast
Origin
Made in the USA
Model
SS818U
Outside Tile Size
18" Round Slip-In
Features
- Durable 304 stainless steel construction
- Designed for oil, coal, or heavy wood burner chimneys
- Withstands tough conditions, including coastal environments
- Features scalloped corners and roll-formed edges
- Outside mounting design for maximum free air space
- Ensures uninhibited chimney draft
- Backed by HY-C's Lifetime Limited Warranty
- Maximizes free air space for uninhibited chimney draft.
- Constructed from 100% 304 Stainless Steel.
- Features a 24-gauge stainless steel hood and 16-gauge base for strength.
- 18-gauge stainless steel mesh effectively arrests sparks and reduces downdrafts.
- Inward-turned mesh seals gaps against nuisance wildlife.
- Made in the USA.
What customers say
Customers consistently praise the HY C Draft King chimney cap for its robust quality and straightforward ease of installation. Many reviewers highlight the durable stainless steel construction, noting its ability to withstand harsh weather conditions without showing signs of wear or rust, suggesting long term reliability. The slip in design is frequently mentioned as a significant advantage, allowing for quick and hassle free setup, even for those with limited DIY experience. This combination of sturdy build and simple application makes it a highly regarded choice for protecting chimneys.
Know before you buy
This model is designed for an 18-inch round flue. It specifically fits outside tile dimensions ranging from 17.5 inches to 18.5 inches.
Yes. Because it is constructed from 100% 304 stainless steel, it is durable enough to withstand the corrosive conditions found within 25 miles of a saltwater coast.
The outside mounting design is specifically engineered to maximize free air space. This ensures that your chimney draft remains uninhibited, which is essential for oil, coal, or heavy wood-burning appliances.
The cap features an 18-gauge stainless steel mesh that acts as a spark arrestor and debris guard. Additionally, the mesh is turned inward at the base to create a tight seal that prevents birds, squirrels, and other nuisance wildlife from entering the flue.
The hood is made from 24-gauge stainless steel with scalloped corners and roll-formed edges for structural integrity. The base is built with a heavier 16-gauge stainless steel to provide a sturdy, long-lasting foundation for the cap.
HY-C offers a lifetime limited warranty on this product, which covers defects in materials and workmanship. This reflects the manufacturer's confidence in the 304 stainless steel construction.
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$274