Metal-Fab 4″ Round to 4″ Oval Galvanized Duct Vent Pipe Adapter 4MRO

SKU: 4MRO

Condition	New
Manufacturer Part Number	4MRO

$47.84

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	$47.84	0%
5–9	$45.45	5%
10+	$43.06	10%

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Metal-Fab 4" Round to 4" Oval Galvanized Duct Vent Pipe Adapter 4MRO

Specifications & product details

Metal-Fab 4" Round to 4" Oval Vent Pipe Adapter – Model 4MRO

Product Overview

The Metal-Fab 4" Round to 4" Oval Adapter is a metal duct transition fitting designed to connect compatible 4-inch round vent piping to 4-inch oval vent piping. Its compact transition design makes it a practical component for HVAC ventilation installations, ductwork modifications, and replacement projects.

Manufactured by Metal-Fab Inc., this adapter features a metallic finish and formed connection ends for use with compatible ventilation components.

Key Features

Round-to-Oval Transition: Connects 4-inch round vent piping to 4-inch oval vent piping.
Metal Construction: Durable metal fitting with a metallic finish.
Compact Design: Suitable for installations where a round-to-oval transition is required.
HVAC Application: Designed for compatible ventilation and vent piping systems.
Metal-Fab Component: Manufacturer model 4MRO.

Item Specifications

Brand: Metal-Fab Inc.
Manufacturer: Metal-Fab Inc.
Manufacturer Part Number: 4MRO
DLP Number: 5H182M
Product Type: Oval Vent Pipe Adapter
Adapter Configuration: Round to Oval
Round Connection Diameter: 4 inches
Oval Connection Size: 4 inches nominal
Material: Metal
Finish: Metallic / Galvanized-Look
Color: Silver
Connection Type: Formed Duct Connection
Application: HVAC Ventilation and Compatible Vent Pipe Systems
Quantity: 1 Piece
Condition: New
Compatibility: Verify vent system specifications before installation.

Package Includes

1 × Metal-Fab 4" Round to 4" Oval Adapter (4MRO)

Important Notes

Please verify dimensions, connection compatibility, and applicable venting requirements before purchasing. Actual finish, construction specifications, and system approvals should be confirmed against the manufacturer's documentation.

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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