Gray South 19-1/4×21 to 18″ Round Gas Pack Duct Adapter

Name: Gray South 19-1/4x21 to 18" Round Gas Pack Duct Adapter
SKU: 1914X21X18-318
Price: 140.58 USD
Availability: InStock

SKU: 1914X21X18-318

$140.58

Only 2 left in stock

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$140.58	0%
5–9	$133.55	5%
10+	$126.52	10%

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Available to order: 2.

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Product Description

Gray South Rectangular to Round Gas Pack Adapter

Size: 19-1/4″ x 21″ to 18″ Round
MFG# 1914X21X18-318

This Gray South rectangular-to-round duct adapter is engineered to convert packaged HVAC gas pack units and air handlers from a 19-1/4″ x 21″ rectangular discharge opening to standard 18” round ductwork.

Manufactured from heavy-duty galvanized sheet metal, this formed transition ensures smoother airflow and professional-grade installation compared to field-built duct fittings.

Ideal Applications:

Gas pack HVAC systems
Packaged rooftop units
Residential and light commercial installs
Supply or return duct transitions

Key Benefits:

✔ Durable galvanized steel construction
✔ Precision-formed airflow transition
✔ Improved duct efficiency
✔ Contractor-grade durability
✔ Compatible with standard 18″ round duct

Designed for HVAC professionals needing a properly sized rectangular-to-round conversion fitting.

Product details

Part / SKU	1914X21X18-318

Package includes

Gray South 19-1/4×21 to 18" Round Gas Pack Duct Adapter

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.