A tube sold by the foot, and the listing that makes it safe · review
The Rockford liner with its insulation blanket kit in the box, which is the honest total for many masonry chimneys.
The same 316 liner and UL 1777 statement as the bare kit, with an insulation blanket kit.
Compare this against the bare liner plus blanket, not the bare liner alone.
A flexible liner goes inside a sound masonry chimney. Have a CSIA-certified sweep inspect the flue first, match the liner to your stove outlet, and ask whether your chimney needs insulation under the liner’s listing.
Prices quoted in this text are dated readings and can differ from the live price at the top of the page.
| Size | 6 in x 25 ft |
|---|---|
| Material | 316 stainless steel |
| Listing | UL 1777 in the USA, ULC S635 in Canada, stated |
| Insulation | Blanket kit included |
| Model | 625S-AC-INSKIT |
| Amazon reference | B076FC29HZ |
The listing says insulation is recommended to help draft and reduce creosote. Your chimney may also require it for clearance.
A separate blanket kit exists, but it has to go on before the liner goes down the flue.
8.0/ 10
If your sweep says insulate, this is the simplest way to buy.
This model is listed on Amazon.com, at ≈ $907 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.
Details checked on November 14, 2026.
A chimney that needs insulation for draft or clearance.
Specifications: the manufacturer sheet for wood heating equipment and the matching Amazon product page. Prices, ratings and availability: read on Amazon.com from a New York address. Every figure on this page names its source.
Same shelf, closest price — what the same spend else heats.
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
