AC Infinity 4" Flexible Aluminum Ducting — 25 ft, 4-Layer with Steel-Wire Spiral & Clamps

AC Infinity Flexible 4-Inch Aluminum Ducting is a 25-foot, four-layer ventilation hose built for durable, leak-resistant air routing in HVAC, dryer, grow room, and tent systems.

This aluminum-thermoplastic duct delivers a balance of flexibility and strength for residential, commercial, and hobby ventilation projects. Its four-layer construction plus steel-wire spiral resists tears and punctures while remaining easy to bend into tight spaces. Included stainless-steel clamps simplify connections to fans, vents, and appliances so you can install a sealed, efficient duct run quickly.

How does this ducting perform in tight or awkward installations?

The embedded steel-wire spiral allows the duct to curve and compress without kinking, so it fits behind appliances, inside attics, or around rafters. It can be trimmed to length on-site for a custom fit and re-expanded as needed for smooth airflow.

• 4" diameter fits most compact inline fans and dryer vents
• Flexible spiral reaches into hard-to-access areas
• Can be shortened for precise routing and sealed with included clamps

Is this ducting durable enough for frequent use or harsh conditions?

The four-layer build combines aluminum and thermoplastic materials for improved tear and puncture resistance compared with single-layer foil ducts. That extra reinforcement helps maintain integrity when moved, compressed, or exposed to mechanical stress during installation and maintenance.

• Multi-layer construction reduces leaks and accidental tears
• Steel-wire spiral resists collapse under pressure
• Thermoplastic layer adds abrasion and cut resistance

What fittings and accessories come with the ducting, and how do I attach them?

The package includes two stainless-steel 4" duct clamps sized to secure ends to fans, vents, or transition collars. Clamps tighten with a screwdriver for a reliable mechanical seal; for improved airtightness use foil tape or HVAC-rated silicone at joints.

• Two stainless-steel 4" clamps included for immediate installation
• Clamp attachment is screwdriver-ready for fast connections
• Compatible with common 4" fans, vents, and adapters

Will this ducting work for grow rooms, dryers, or HVAC systems?

This hose is specified for a variety of ventilation uses including grow tents, clothes dryers, and HVAC runs where a flexible 4" connection is acceptable. It offers a cost-effective route for moving air while providing more robustness than thin foil alternatives.

• Suitable for grow rooms and tent ventilation systems
• Acceptable for short dryer exhaust runs when local codes allow
• Works for HVAC connections needing a flexible 4" run

Who is this for? Installers, hobby growers, contractors, and homeowners who need a resilient, easy-to-route 4" duct solution will find this AC Infinity product useful. It’s ideal when you require a durable yet flexible duct that can be trimmed to length, clamped securely, and reconfigured as systems change. Choose this ducting when you want better tear resistance and a reliable mechanical connection without custom metalwork.