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

The 12 Inch, 14 Inch, and 15 Inch Oval Single Ply Chimney Liner Kit is a heavy-duty stainless steel chimney liner designed for installations where a standard round liner will not fit and larger flue diameters are required. Made from premium 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 typically used for large fireplaces, commercial systems, and very high-BTU heating applications where maximum venting capacity is required but space is limited. It is especially useful when a 12", 14", or 15" round liner cannot fit inside the chimney flue. Its single-ply flexible construction allows for easier installation while still maintaining strength and durability for long-term performance.

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

Key Features: Available in 12", 14", and 15" oval sizes (outside dimensions vary), single-ply flexible construction, .006" wall thickness, 316 stainless steel, UL 1777 listed, made in the USA, air- and water-tight design, and lifetime warranty.

Product Specifications

Product type:	Oval chimney liner kit
Available sizes:	12", 14", and 15" oval
Shape:	Oval (for tight flue installations)
Material:	316 stainless steel
Wall construction:	Single-ply flexible
Wall thickness:	.006"
Certification:	UL 1777 listed

Key Benefits

Ultra Large Capacity Fit	Designed for oversized fireplaces and commercial systems requiring 12", 14", or 15" flue sizes
Space-Saving Design	Provides proper venting when large round liners cannot fit inside the flue
Flexible Installation	Lighter, more flexible construction makes installation easier in masonry chimneys
Strength	Air- and water-tight design with multi-ply seams for durability
Durability	Resistant to corrosion, moisture, and chimney acids
Safety	Helps keep flue gases inside the liner and reduce the risk of carbon monoxide leaks
Warranty	Lifetime warranty (transferable)

This 12", 14", and 15" oval chimney liner kit can be customized with different top plates, chimney caps, adapters, and other components to match your installation requirements.