Rheia™ 3" Pass-Through Boot Assembly | Part #10-01-210

Get Through the Tight Spots Without Redesigning the Run

Not every duct run gets a clean shot to the ceiling. The Rheia™ Pass-Through Boot Assembly is built for the awkward transitions: through a wall, down through a floor, or across a shallow interstitial space before the run finally lands at a diffuser. Its compact footprint fits where a standard termination simply will not.

Toolless snap-fit connectors accept 3" Rheia™ ferrules directly, so the transition seals up as fast as the rest of the system with no tape or mastic. Molded from a flame-retardant PC/ABS engineering thermoplastic rated UL94 V-0, it is UL 181C listed and UL 2043 rated for air-handling spaces, and it is 100% recyclable.

Key Features

Built for Pass-Through Transitions — Carries duct through walls, floors, and tight interstitial spaces before it connects to a Rheia™ diffuser.

Compact Footprint — Fits shallow cavities and constrained framing where a full-size boot will not.

Toolless Snap-Fit Connectors — Accepts 3" Rheia™ ferrules directly with no tape, mastic, or tools.

Flame-Retardant Engineered Polymer — PC/ABS blend rated UL94 V-0 for use inside walls, floors, and ceiling cavities.

Plenum-Space Rated — UL 2043 tested for heat and visible smoke release in air-handling spaces.

Technical Specifications

Part Number: 10-01-210

Duct Connection Size: 3" diameter

Mounting Type: Wall / floor / interstitial pass-through

Material: Flame-retardant PC/ABS blend

Color: Black / neutral housing

Flame Rating: UL94 V-0

Certifications: UL 181C Non-Metal Joining Accessories for Flexible Air Ducts (File MH64419), UL 2043

Recyclability: 100% recyclable

Warranty: 2-year limited warranty

What's in the Box

(1) Rheia™ 3" Pass-Through Boot Assembly