12", 14", 14.5" and 15" Oval Double Ply Smooth Chimney Liner Kit

The 12 Inch & Up Oval Double Ply Smooth Chimney Liner Kit is a premium stainless steel chimney liner designed for large-diameter flue applications 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 oval chimney liner kit is available in larger sizes including 12", 14", 14.5", and 15" options, making it ideal for large residential, commercial, and high-output heating systems such as fireplaces, boilers, and furnaces. It is specifically designed for situations where a properly sized round chimney liner cannot fit inside the existing chimney due to space limitations.

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

Oval chimney liners are commonly used in tight or rectangular flue tiles to maximize airflow while maintaining proper venting performance. If a properly sized round chimney liner cannot fit inside your flue, an oval liner provides a safe and effective alternative without sacrificing performance.

Key Features: available in 12", 14", 14.5", and 15" oval sizes, 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
Available sizes:	12", 14", 14.5", and 15" oval options
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

Maximum Flue Capacity	Designed for large residential and commercial heating systems requiring high exhaust flow
Enhanced Draft	Smooth interior improves airflow and supports efficient chimney performance
Custom Sizing Options	Available in multiple large oval sizes to match specific flue requirements
Space-Saving Design	Provides proper venting when large round liners cannot fit inside the chimney
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 contain flue gases and reduce the risk of carbon monoxide leaks
Warranty	Lifetime warranty (transferable)

This 12 inch and up oval chimney liner kit can be customized with different top plates, chimney caps, adapters, and other components to match your installation requirements.