Gray North 20″ A Collar Small End Short 20-313SE HVAC Duct Fitting

20″ A Collar Small End (Short) – MFG# 20-313SE

Heavy-Duty Galvanized HVAC Duct Collar

This 20-inch galvanized steel A collar (small end, short profile) is designed for connecting large-diameter round duct to trunk lines or plenums in commercial and residential HVAC systems.

The short collar depth makes it ideal for installations where space is limited while still providing a secure, professional duct transition.

Key Features:

• ✔ 20″ round duct size

• ✔ Small end configuration

• ✔ Short profile design for tight installs

• ✔ Galvanized steel construction

• ✔ Pre-tabbed edge for easy fastening

• ✔ Commercial-grade sheet metal

Common Applications:

• Commercial HVAC trunk lines

• Large round branch take-offs

• Industrial ventilation systems

• New construction and retrofit duct installs

Pairs well with:

• 20″ round rigid duct

• 20″ flex duct

• Worm gear clamps

• Sheet metal screws & foil tape

Designed for professional HVAC installers needing durable, large-diameter duct fittings for reliable airflow connections.

Product details

Part / SKU	20-313SE

Package includes

• Gray North 20" A Collar Small End Short 20-313SE HVAC Duct Fitting

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