Flue parts
A stove flue has two different jobs in it: connector inside the room, and listed chimney everywhere else. The parts must come from one system, and the point where one ends and the other begins is where most mistakes happen.
Stove pipe connects the stove to the chimney. It can be single wall, with about 18 inches of clearance, or double wall such as DuraVent DVL, which its listing says cuts wall clearance to 6 inches. It stays in the room you can see.
From the ceiling box or wall thimble onward, you need a listed chimney. Look for UL 103 HT. The DuraVent DuraPlus kit carries a chimney through a wall and supports up to 40 feet of pipe, which is sold separately.
US practice uses the 3-2-10 rule as a minimum: 3 feet above the roof where it passes through, and 2 feet above anything within 10 feet. Many stove manuals ask for more total height. Every elbow costs draft, so keep bends to a minimum.
A listed chimney ends in its own cap. The AllFuel HST cap names UL 103 HT and fits only its own pipe. A generic clamp-on cap is for single-wall flues on sheds and cabins, where your code allows it.
6 x 12 in · double wall · clearance 6 in to walls, 8 in to ceilings · UL listed, stated
The short DVL section that spells out the point of double wall: clearance down from 18 inches to 6 inches.
Best for: A stove close to a wall.
≈ $45
6 in · triple wall · twist lock · supports up to 40 ft · 38.4 lb
A through-the-wall kit for 6 inch DuraPlus triple-wall chimney, with 556 ratings at 4.5 out of 5; chimney pipe is not included.
Best for: Running an exterior chimney from a wall exit.
≈ $495
7 in · Class A · wall 5-1/2 to 9-1/2 in, up to 16 in · galvanized · finishing collar not included
A telescoping 7 inch DuraTech thimble for Class A pipe, that fits walls from 5-1/2 to 9-1/2 inches.
Best for: A 7 inch DuraTech chimney through a wall.
≈ $265
6 in · 304 stainless · 3/4 in spark arrestor · twist lock · UL 103 HT certified, stated
A twist-lock rain cap with a spark arrestor, UL 103 HT certified according to the listing, for AllFuel HST pipe only.
Best for: An AllFuel HST Class-A chimney.
≈ $100
No. Listings such as AllFuel HST say so directly. Use listed chimney parts for any wall or ceiling penetration.
Generally no. Chimney parts lock into their own system, and AllFuel HST says its cap will not fit other brands.
Down, toward the stove, so creosote stays inside the pipe.
For heating: A stove close to a wall.
Where it does best: States the clearance reduction
Where it does worst: Short length
For heating: Running an exterior chimney from a wall exit.
Where it does best: All wall parts in one kit
Where it does worst: Pipe sold separately
For heating: A 7 inch DuraTech chimney through a wall.
Where it does best: Telescopes to the wall
Where it does worst: Finishing collar not included
For heating: An AllFuel HST Class-A chimney.
Where it does best: Names UL 103 HT
Where it does worst: Fits one brand only
$16 – $33
6 models
$35 – $100
8 models
The stoves here are taken from the catalog of this site. Specifications are the ones the manufacturer states and the ones on the Amazon page; prices are readings from Amazon.com and move often, and both change. Ranking rests on declared specifications, on stated strengths weighed against stated limits, and on price. No stove here has been lit by us, and nothing on this page suggests it has.
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