A tube sold by the foot, and the listing that makes it safe · review
A smooth-wall double-ply liner, twice as thick as the FireSafe kits, with a stated 20 percent draft gain.
Chim Cap’s Forever Vent kit gives 316L stainless, a double-ply .012 inch wall, a smooth interior, a top plate with rain cap and a tee.
A corrugated liner traps soot in its ribs. A smooth wall is easier to brush.
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.
| Size | 6 in x 25 ft |
|---|---|
| Material | 316L stainless |
| Thickness | 0.012 in |
| Construction | SmoothWall, double ply |
| Included | 13 x 13 in top plate with rain cap, tee, tee cap, fasteners |
| Weight | 37.2 lb |
| Stated gain | 20% draft and efficiency, no test named |
| Amazon reference | B0085VO8CC |
A smooth inner surface. The listing claims 20 percent better draft, with no test named.
.012 inch, according to the listing.
7.9/ 10
Worth the premium for the smooth wall. Confirm the listing with the seller.
This model is listed on Amazon.com, at ≈ $646 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.
An owner who wants a smooth, thicker flue for easier sweeping.
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 · 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
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.
