Description

4” Duct Hose Ring 

The 4” Duct Hose Ring  is a high-quality round hose adapter designed to ensure secure, efficient, and long-lasting connections in air distribution systems. Specifically engineered for use in marine, RV, residential, and commercial HVAC applications, this hose ring is built to meet demanding airflow requirements while maintaining superior durability and performance.

Purpose & Application
The HR4 Duct Hose Ring is used to duct conditioned air to wood-framed or plastic-framed grilles, ensuring a consistent and directed airflow to designated spaces. It is part of a complete line of plastic ducting products—ranging from the hose adapter on the air handler to the transitions located behind decorative grilles—allowing for a fully compatible and reliable air distribution setup.

Design & Build Quality
Manufactured from durable, high-grade plastic, the HR4 hose ring resists corrosion, moisture damage, and environmental wear, making it ideal for harsh marine conditions and long-term HVAC performance. The precise round shape ensures an optimal fit with 4” ducting hoses, minimizing air leaks and improving energy efficiency. With an effective area (EA) of 10.5 in², it delivers dependable airflow while keeping noise and pressure drops to a minimum.

Ease of Installation
The HR4 is designed for straightforward installation, allowing technicians and DIY users to securely fasten ducting hoses to air distribution components without complex tools. Its robust design ensures the hose remains firmly in place, even under high-pressure or vibration-prone environments.

Key Features:

• Item Code: HR4

• Description: Hose Ring – Round, 4”

• Effective Area: 10.5 in²

• Durable plastic construction for longevity

• Corrosion and moisture resistant

• Designed for marine, RV, and HVAC use

• Compatible with wood-framed or plastic-framed grilles

• Part of a complete air distribution product line

Ideal For:

• Marine air conditioning systems

• RV heating and cooling setups

• Residential HVAC projects

• Commercial air distribution applications

Whether you are upgrading an existing air system or building a new installation, the 4” Round Duct Hose Ring (HR4) offers the perfect combination of durability, efficiency, and compatibility. It’s a reliable component for achieving optimal airflow and maintaining a comfortable indoor environment.