Trim Ring System

Unlike traditional fabric duct systems that collapse or sag when the HVAC system isturned off, Air Distribution Concepts (ADC) fabric ducting is engineered to maintain its shape with the Trim Ring System. This innovative internal support system keeps the fabric duct open even when there is noairflow, providing a clean appearance and ensuring the system is ready toperform the moment the air handler starts. The Trim Ring System consists of lightweight, semi-rigid rings installed inside the fabric duct at engineered intervals. Each ring is designed to fit precisely within the duct and is held in place by the duct's internal tensioning system. When the end cap is tensioned, the rings maintain the duct's cylindrical profile, preventing sagging, collapsing, or deflation while the HVAC system is off.

Bymaintaining the duct's shape without relying on air pressure, the Trim Ring System improves both the appearance and functionality of the fabric air distribution system.

‍How theTrim Ring System Works

The Trim Ring System uses lightweight internal support rings that are strategically positioned throughout the fabric duct. These rings work together with the suspension system and the tensioned end cap to create a stable, self-supporting structure that retains its shape at all times.

Because the duct remains fully open, conditioned air begins flowing immediately when the HVAC system starts, eliminating the inflation period common with conventional fabric duct systems. This helps maintain designed airflow patterns, reduces stress on the fabric, and contributes to consistent HVAC performance.

‍Key Benefits

• Keeps fabric ducts fully open when the air handler is turned off
• Prevents sagging, collapsing, and fabric wrinkles
• Maintains a clean, professional  appearance year-round
• Provides immediate airflow at system startup with no inflation delay
• Supports consistent air distribution by preserving the duct's designed shape
• Lightweight, durable internal ring construction
• Engineered specifically for ADC fabric duct systems

Ideal Applications

The Trim Ring System is an excellent solution for commercial and industrial facilities where appearance, performance, and reliability are important. It is commonly used in warehouses, manufacturing plants, retail stores, gymnasiums, foodprocessing facilities, agricultural buildings, and other spaces utilizing fabric air distribution systems.

With the ADC Trim Ring System, your fabric ductwork remains open, properly supported,and ready to deliver consistent, efficient airflow whenever your HVAC system isin operation.

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