7″ Round Air-Tite Adhesive Duct Collar HVAC Starter Flange 7-400A

SKU: 7-400A

Weight	1.5 lbs
Dimensions	12 × 11 × 5 in
Condition	New
Manufacturer Part Number	7-400A

$13.38

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	$13.38	0%
5–9	$12.71	5%
10+	$12.04	10%

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7" Round Air-Tite Adhesive Duct Collar HVAC Starter Flange 7-400A

Specifications & product details

7″ Round Air-Tite Adhesive HVAC Duct Collar – MFG# 7-400A

This 7-inch round Air-Tite adhesive duct collar is designed for fast and secure HVAC duct take-offs and branch connections. The factory-applied adhesive backing allows quick installation to sheet metal surfaces without additional sealants, helping reduce air leakage and improve system efficiency.

Constructed from durable galvanized steel, this starter flange features a crimped connection end for easy attachment to round metal or flexible duct.

✔ Ideal For:

HVAC branch duct connections
Supply and return duct take-offs
Sheet metal plenum installations
Residential & commercial ventilation systems

✔ Key Features:

7″ round diameter
Adhesive-backed base for airtight seal
Crimped collar for duct connection
Galvanized corrosion-resistant steel
Improves system airflow efficiency
Professional HVAC-grade construction

Compatible with standard 7″ round metal duct and insulated flex duct systems.

Perfect for HVAC contractors, installers, and sheet metal professionals.

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Shipping & availability

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