Double-wall corrugated PE flat duct（4*2 inch，grey）

Compact, lightweight, and hygienic — the Double‑Wall Corrugated PE Flat Duct is designed to deliver efficient airflow while saving valuable space in ceilings and walls.

Manufactured from high‑quality food‑grade PE material, it is odorless, non‑toxic, and resistant to wear, offering both safety and long service life. Its double‑wall corrugated structure enhances strength without compromising flexibility, making it ideal for modern ventilation layouts with limited space.

Finished in clean grey, this 4 × 2 inch duct provides a professional, discreet appearance suitable for both residential and commercial ventilation systems. It’s the practical choice for compact, low‑profile installations that require durability, safety, and space optimization.