Delta Duct SFD-300 – Uninsulated Semi Rigid Flexible Duct

The Delta Duct SFD-300 is a high-strength uninsulated semi-rigid flexible duct specifically designed for air distribution and ventilation systems requiring durability, heat resistance, and superior performance. Manufactured by Delta Duct Air Conditioning L.L.C., UAE, this duct is ideal for low and medium-pressure applications and is widely used in commercial, industrial, and residential HVAC systems.

It complies with UL 181 Class 1 and follows NFPA 90A & 90B standards, ensuring maximum safety and fire resistance for air-handling applications.

Construction & Design

The SFD-300 is constructed from heavy-gauge corrugated aluminum with water-tight continuous lock seams, providing both flexibility and strength. This semi-rigid construction allows the duct to be bent into shape and maintain its position, eliminating the need for additional supports.

Its interlocking seam design ensures airtight performance while resisting deformation and leakage under pressure.

Key Features

UL 181 Class 1 Certified – Compliant with international HVAC safety standards.
Heavy-Gauge Corrugated Aluminum – Provides strength and flexibility for heavy-duty performance.
Semi-Rigid & Self-Supporting – Retains form after bending; no external supports required.
Fire Resistant & Non-Combustible – Safe for use in heat-prone environments.
Corrosion & UV Resistant – Suitable for diverse climates and long-term operation.
Air Tight Construction – Prevents air leakage and maintains pressure integrity.
Chemical Fume Resistance – Withstands exposure to harsh conditions.
Quick & Easy Installation – Lightweight, easy to transport, cut, and fit.
Energy Efficient – Provides low operating cost and maintenance-free service life.