At a glance
- Type: Tee with cap, part of the DuraTech LDC chimney system
- Diameters: 10", 12", 14", 16", 18", 20", 22" and 24"
- Finishes: Galvalume and Stainless steel
- Listing: UL 103 Type HT (10" to 16"); UL 103 (18" to 24")
- Clearance: At least 2" to combustibles
- Made by: DuraVent
- Built to order: 18" to 24" parts are built to order and not returnable
Description
Joins a horizontal run to the vertical chimney for a through-the-wall installation; the cap closes the bottom for cleaning. DuraTech LDC is the large-diameter DuraTech chimney, 10 to 24 inch, listed to UL 103 Type HT in 10 to 16 inch and UL 103 in 18 to 24 inch.
Specifications
Dimensions
| Part | Diameter | Style | Finish | Weight |
|---|---|---|---|---|
| 10DT‑T | 10" | Tee with Cap | Galvalume | 26.6 lb |
| 10DT‑TSS | 10" | Tee with Cap | Stainless steel | 26.6 lb |
| 12DT‑T | 12" | Tee with Cap | Galvalume | 41.0 lb |
| 12DT‑TSS | 12" | Tee with Cap | Stainless steel | 41.0 lb |
| 14DT‑T | 14" | Tee with Cap | Galvalume | 50.0 lb |
| 14DT‑TSS | 14" | Tee with Cap | Stainless steel | 50.0 lb |
| 16DT‑T | 16" | Tee with Cap | Galvalume | 50.4 lb |
| 16DT‑TSS | 16" | Tee with Cap | Stainless steel | 50.4 lb |
| 18DT‑T | 18" | Tee with Cap | Galvalume | 9.5 lb |
| 18DT‑TSS | 18" | Tee with Cap | Stainless steel | 9.9 lb |
| 20DT‑T | 20" | Tee with Cap | Galvalume | 64.0 lb |
| 20DT‑TSS | 20" | Tee with Cap | Stainless steel | 64.0 lb |
| 22DT‑T | 22" | Tee with Cap | Galvalume | — |
| 22DT‑TSS | 22" | Tee with Cap | Stainless steel | — |
| 24DT‑T | 24" | Tee with Cap | Galvalume | — |
| 24DT‑TSS | 24" | Tee with CapSS | Stainless steel | — |
Documents
Details
| System | DuraTech LDC |
|---|---|
| Listing | UL 103 Type HT (10" to 16"); UL 103 (18" to 24") |
| Clearance to combustibles | At least 2" to combustibles |
| Finishes | Galvalume and Stainless steel |
| Price basis | DuraVent 2026 list price (MSRP), effective July 1, 2026 |
| Returns | 18" to 24" parts are built to order and not returnable |
Questions
What size do I need?
The appliance's own instructions set the chimney diameter; match it, and keep the whole chimney one diameter.
What clearance does it need?
At least 2" to combustibles, per DuraVent's listing. Never fill the clearance space with insulation.
Can I mix DuraTech with other brands?
No. DuraVent's instructions require authorized DuraTech parts only, to keep the chimney listed.
Where are the installation rules?
In the documents above: supports, firestops, enclosures and chimney height are set by DuraVent's instructions, and the installer follows them.
Why is there no photo?
DuraVent images are being added; the part numbers and sizes on this page are from DuraVent's 2026 list.
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