About the 4-inch Flexadux TR T-7
The 4-inch is the most-bought Flexadux TR T-7 — the standard port size for shop dust collection and the working size for duct cleaning and automotive exhaust ventilation. It is a medium-weight black thermoplastic rubber hose on a spring steel wire helix: the helix keeps it round under vacuum, the TPR wall shrugs off oils, chemicals, and sun, and the smooth interior keeps airflow efficient. Stocked from a 6 ft piece to a 50 ft run.
Stocked in 6, 8, 12, 25, and 50 ft lengths. Each price is for one hose of that length.
Where you'll see the 4-inch T-7
- Dust collection — wood chips, metal shavings, plastic pellets — in shops and manufacturing
- Duct cleaning, air duct and furnace cleaning, commercial HVAC service
- Automotive exhaust ventilation, paint spray extraction, fume and pollution control
If the hose will be dragged across floors or concrete, the Flexadux TR T-7W is the same construction with an added yellow polypropylene wearstrip against abrasion. For lighter duty at lower cost, see the PVC and polyurethane Flex-Tube lines.