Wall thimbles
A wall thimble for 8 inch DuraPlus triple-wall chimney, for walls from 4-1/4 to 7-1/4 inches thick.
A wall thimble for 8 inch DuraPlus triple-wall chimney, for walls from 4-1/4 to 7-1/4 inches thick.
Best for: An 8 inch DuraPlus system.
DuraVent gives a telescoping thimble with a matte black trim ring.
A wall pass-through must match your chimney system, and only listed parts should go through a combustible wall. Read the installation manual, and check with your local inspector first.
Up to 16 inches with a field-fabricated extension.
Wood, gas, coal and oil.
This model is listed on Amazon.com, at ≈ $179 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 1, 2026.
An 8 inch DuraPlus system.
Same shelf, nearest prices. We list only specifications every stove states — gaps compare nothing.
| Model | Price | Diameter | System | Weight |
|---|---|---|---|---|
| DuraVent DuraPlus Wall Thimble, 8 in | $179 | 8 in | DuraPlus | 7.5 lb |
| DuraVent DuraTech 9643 Wall Thimble, 8 in | $171 | 8 in | DuraTech Class A | 6.9 lb |
| DuraVent DuraTech 70736 Wall Thimble, 7 in | $265 | 7 in | DuraTech Class A | 6.7 lb |
| DuraVent 3PVL-WTS Pellet Vent Wall Thimble, 3 in | $80 | 3 in | PelletVent | 1.9 lb |
At $179, it sits +5 % against the $171 median of the 5 models in this category published here.
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.
An 8 inch DuraTech wall thimble, on a three-line listing with 5 ratings at 2.5 out of 5.
Best for: An 8 inch DuraTech system.
A 3 inch wall thimble for DuraVent’s PelletVent system, with no text on the listing beyond the table.
Best for: A pellet stove vent through a wall.
Not a sleeve but a blanking cap — an expanding funnel with insulation, for a chimney opening that is no longer used.
Best for: An old chimney breast with a second opening nobody uses, where a bare hole is drafty and ugly
A square brush for clay tile flues that reaches the corners a round brush misses.
Best for: A square clay-tile masonry flue.
A tempered steel brush for 6 inch round masonry flues, made in the USA, with 1,323 ratings at 4.7 out of 5.
Best for: A 6 inch round masonry flue.
The 8 inch round version of the Midwest Hearth wire brush for masonry flues.
Best for: An 8 inch round masonry flue.
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.