5.5" Oval Double Ply Smooth Chimney Liner Kit

The 5.5 Inch Oval Double Ply Smooth Chimney Liner Kit is a premium stainless steel chimney liner designed for installations where a standard round liner will not fit. Made from high-quality 316 stainless steel, this liner kit is ideal for relining masonry chimneys while protecting against corrosion, moisture, and flue gas leaks.

This 5.5 inch oval chimney liner kit is commonly used for wood stoves, fireplace inserts, and residential heating appliances that require slightly more capacity than a standard 5" liner. It is specifically designed for installations where a properly sized round chimney liner cannot fit inside the flue due to limited space. Its oval shape allows for proper airflow while fitting into tighter or rectangular chimney flues.

The double-ply smooth wall construction improves draft efficiency and airflow compared to corrugated liners, while also making cleaning easier. This design provides increased strength and durability while maintaining flexibility for installation in masonry chimneys.

If a properly sized round chimney liner cannot fit inside your flue, an oval chimney liner provides a safe and effective alternative without sacrificing performance.

Key Features: 5.5" oval sizing (outside dimensions vary), double-ply smooth flexible construction, .006" wall thickness, 316 stainless steel, UL 1777 listed, made in the USA, air- and water-tight design, 7-ply seams, and lifetime warranty.

Product Specifications

Product type:	Oval chimney liner kit
Shape:	Oval (for tight flue installations)
Material:	316 stainless steel
Wall construction:	Double-ply smooth flexible
Wall thickness:	.006"
Certification:	UL 1777 listed

Key Benefits

Precise Sizing	Ideal when a 5" liner is too small but space will not allow a larger round liner
Enhanced Draft	Smooth interior improves airflow and supports efficient chimney performance
Space-Saving Design	Fits into tight or rectangular flue tiles without sacrificing venting efficiency
Flexible Installation	Maintains flexibility while offering added strength from double-ply construction
Strength	Air- and water-tight design with 7-ply seams for durability
Durability	Resistant to corrosion, moisture, and chimney acids
Safety	Helps keep flue gases contained and reduce the risk of carbon monoxide leaks
Warranty	Lifetime warranty (transferable)

This 5.5 inch oval chimney liner kit can be customized with different top plates, chimney caps, adapters, and other components to match your installation requirements.