Gray North 4″ A Collar Small End Crimped 4-313SE-1 HVAC Fitting

SKU: 4-313SE-1

Weight	12 lbs
Dimensions	8 × 8 × 8 in
Condition	New
Manufacturer Part Number	4-313SE-1

$3.96

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	$3.96	0%
5–9	$3.76	5%
10+	$3.56	10%

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Gray North 4" A Collar Small End Crimped 4-313SE-1 HVAC Fitting

Specifications & product details

4″ A Collar Small End – Crimped – MFG# 4-313SE-1

This 4-inch galvanized steel A collar (small end, crimped) is designed for creating secure branch take-offs from HVAC trunk lines in residential and light commercial systems.

The crimped connection end allows easy insertion into 4″ round rigid or flexible duct, while the serrated ring improves grip and connection stability during installation.

Key Features & Benefits:

✔ 4″ round duct size
✔ Small end configuration
✔ Crimped end for fast installation
✔ Serrated ring for improved hold
✔ Galvanized steel construction
✔ Ideal for branch take-offs

Ideal Applications:

Bathroom exhaust runs
Dryer vent transitions
Supply branch lines
Residential HVAC duct systems
Retrofit & new installs

Pairs well with:

4″ rigid pipe
4″ insulated flex duct
Worm gear clamps
Sheet metal screws
HVAC foil tape

Built for professional HVAC installers needing reliable small-diameter duct connections.

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

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