Rheia™ Snap-Fit Duct Coupler — 3" Duct | Part #10-10-030

Extend Any Duct Run in Seconds — No Tape, No Mastic, No Leaks

The Rheia™ Coupler is the simplest way to join two sections of 3" flexible duct into one continuous, airtight run. Instead of wrestling with foil tape, mastic, and zip ties in a tight ceiling cavity, you push, twist, and hear the click that tells you the joint is sealed. It is the small part that keeps an entire home-run ventilation layout tight and quiet.

Molded from a flame-retardant PC/ABS engineering thermoplastic and rated UL94 V-0, the coupler also links duct to other Rheia™ snap-fit components like ferrules and elbows, so you can route around obstacles and stretch a run to where it actually needs to land. It is UL 181C listed and UL2043 rated for use in air-handling spaces, and it is 100% recyclable.

Key Features

Snap-Fit Duct-to-Duct Joining — Connects two sections of 3" duct into a continuous run without additional tape or mastic.

Full Rheia™ Component Compatibility — Also links duct to Rheia™ ferrules, elbows, and other snap-fit fittings for flexible routing.

Flame-Retardant Engineered Polymer — PC/ABS blend rated UL94 V-0 for use inside ceilings and wall cavities.

Plenum-Space Rated — UL2043 tested for heat and visible smoke release in air-handling spaces.

100% Recyclable — Fully recyclable thermoplastic construction.

Technical Specifications

Part Number: 10-10-030 (also listed as 10-01-030)

Duct Compatibility: 3" duct

Outer Diameter: 3.5" (88.0 mm)

Height: 1.9" (48.4 mm)

Weight: 0.08 lbs

Material: Flame-retardant PC/ABS blend

Color: Black

Flame Rating: UL94 V-0

Certifications: UL 181C Non-Metal Joining Accessories for Flexible Air Ducts (File MH64419), UL2043

Recyclability: 100% recyclable

Warranty: 2-year limited warranty

What's in the Box

(1) Rheia™ Snap-Fit Duct Coupler