20×8 to 12×11 Trunk Duct Transition Center S/D 208X1211-81CSD

SKU: 208X1211-81CSD

Weight	15 lbs
Condition	New
Manufacturer Part Number	208X1211-81CSD

$62.46

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$62.46	0%
5–9	$59.34	5%
10+	$56.21	10%

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20x8 to 12x11 Trunk Duct Transition Center S/D 208X1211-81CSD

Specifications & product details

20×8 to 12×11 Center Trunk Transition – Slip & Drive

This rectangular trunk transition reduces duct size from 20″ x 8″ down to 12″ x 11″ while maintaining a centered airflow path.

Designed for main trunk adjustments in residential and light commercial HVAC systems, this fitting uses Slip & Drive (S/D) connections for quick field assembly.

Constructed from galvanized steel for durability and long-term corrosion resistance.

Key Features:

✔ 20×8 to 12×11 rectangular reduction
✔ Centered transition design
✔ Slip & Drive connection
✔ Galvanized steel construction
✔ Ideal for trunk line modifications

Common Applications:

Reducing trunk size after branch take-offs
Adapting to different air handler outputs
HVAC remodel installations
Main supply trunk adjustments

Pairs well with:

20×8 trunk duct
12×11 trunk duct
Drive cleats & S-cleats
Foil tape & duct sealant

Compatibility & part-number help

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Shipping & availability

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