A tube sold by the foot, and the listing that makes it safe
The 5 highest scores among the 7 chimney liners we cover that have a checked Amazon.com listing. Scores are out of ten and only compare models inside this category.
Prices are indicative and were read on Amazon.com; the button shows the current one. If we earn a commission, it does not change the order.
A liner gives an old masonry flue a sealed, correctly sized path. The figure to look for is a UL 1777 listing, not just an alloy. Rockford Chimney Supply states one plainly. Other listings say code-compliant and leave it there. Wall thickness matters too: 0.006 inch is thin, and a 0.012 inch double ply is twice that.
316 stainless · 0.006 in · 6 in x 15 ft · top plate with rain cap · appliance connector · made in USA
A 6 inch by 15 ft liner kit in thin 0.006 inch 316 stainless, with a rain cap and top plate, and no UL number on the listing.
Best for: A short chimney on a tight budget, once the listing is confirmed.
≈ $409
316 stainless · 6 in x 25 ft · UL 1777 listed, stated · ULC S635 · quick connect · transferable warranty
A 6 inch by 25 ft 316 stainless liner kit with 473 ratings at 4.6 out of 5, and it plainly states its UL 1777 listing.
Best for: A DIY installer who wants a named listing and a large buyer base.
≈ $574
316L stainless · 0.006 in · 6 in x 25 ft · tee connector for horizontal hookups · top plate with rain cap · 22 lb
A tee kit for stoves that enter the chimney from the side, in 316L stainless, with 98 ratings at 4.6 out of 5.
Best for: A stove that meets the chimney through a thimble in the wall.
≈ $631
316L stainless · double ply · 0.012 in · 6 in x 25 ft · tee and tee cap · 37.2 lb
A smooth-wall double-ply liner, twice as thick as the FireSafe kits, with a stated 20 percent draft gain.
Best for: An owner who wants a smooth, thicker flue for easier sweeping.
≈ $646
316L stainless · double ply · 0.012 in · 6 in x 30 ft · tee and tee cap
The same smooth-wall kit in a 30 foot length for taller chimneys.
Best for: A two-story chimney over 25 feet.
≈ $689
316 stainless · 6 in x 25 ft · UL 1777 listed, stated · insulation blanket kit included
The Rockford liner with its insulation blanket kit in the box, which is the honest total for many masonry chimneys.
Best for: A chimney that needs insulation for draft or clearance.
≈ $907
316L stainless · double layer · 8 in x 25 ft · cap, top plate, stove adapter · 43 lb
An 8 inch by 25 ft smooth-wall liner kit for larger stoves, with no ratings yet.
Best for: A stove or insert with an 8 inch outlet.
≈ $800
States UL 1777, with 473 ratings at 4.6 out of 5.
Rockford Chimney Supply 316 Stainless Flexible Liner Kit, 6 in x 25 ft
The liner and blanket in one kit.
Rockford Chimney Supply Liner Kit with Insulation Blanket, 6 in x 25 ft
Double ply at 0.012 inch, and easier to sweep.
Match your stove outlet, usually 6 inches. Oversizing loses draft.
Often. See our UL 1777 page, and ask your sweep.
Kits come with DIY instructions, yet it means work on the roof. Check local permit rules.
Start with the inspection, not the price. Buy a kit that names its listing, sized to the stove, with insulation if your chimney needs it.
The column appears only if four appliances in five state the value. A half-empty column separates nobody.
| Model | Price | Material | Size |
|---|---|---|---|
| FireSafe Basic Flexible Liner Kit, 6 in x 15 ft | $409 | 316 stainless steel | 6 in x 15 ft |
| Rockford Chimney Supply 316 Stainless Flexible Liner Kit, 6 in x 25 ft | $574 | 316 stainless steel | 6 in x 25 ft |
| FireSafe Flexible Liner Tee Kit, 6 in x 25 ft | $631 | 316L stainless steel | 6 in x 25 ft |
| Forever Vent SmoothWall Double Ply Liner Kit, 6 in x 25 ft | $646 | 316L stainless | 6 in x 25 ft |
| Forever Vent SmoothWall Double Ply Liner Kit, 6 in x 30 ft | $689 | 316L stainless | 6 in x 30 ft |
| Woodeze Smooth-Wall Liner Kit, 8 in x 25 ft | $800 | 316L stainless, double layer | 8 in x 25 ft |
| Rockford Chimney Supply Liner Kit with Insulation Blanket, 6 in x 25 ft | $907 | 316 stainless steel | 6 in x 25 ft |
$409 – $574
2 models
FireSafe Basic Flexible Liner Kit, 6 in x 15 ft, Rockford Chimney Supply 316 Stainless Flexible Liner Kit, 6 in x 25 ft
$631 – $646
2 models
FireSafe Flexible Liner Tee Kit, 6 in x 25 ft, Forever Vent SmoothWall Double Ply Liner Kit, 6 in x 25 ft
Specifications: manufacturer sheets for wood heating equipment and the matching Amazon product pages. Prices and availability: read on Amazon.com from a New York address. Every figure in this table names its source.
Most recent revision in this category: November 14, 2026.
The price beside each product is fetched as this page opens, and it is the only figure here that is current. Any amount written into the prose was read once, on the day that sentence was written, and nothing has refreshed it since.
